Phan H9 Chu Dang - Periplocoideae Thuqc Hq Thien Ly - Asclepiadaceae 0 Viet Nam

HQI NGHI KHOA HQC TOAN QU6C V£ SINH THAI VA TAI NGUYgN SINH VAT tAN THlJ BA

PHAN H9 CHU DANG - PERIPLOCOIDEAE THUQC HQ THIEN LY - ASCLEPIADACEAE 0 VIET NAM

TRAN THE BACH, VU TIEN CHINH DO VAN HAI, BUI HONG QUANG Vien Sinh thdi vd Tdi nguyen sinh vgt JOONGKU LEE Vi^n Nghien ciht sinh hgc vd Cong nghe sinh hgc Hdn Quoc Hifn nay vi fri phan loai cua phan hp Chu ding - Periplocoideae van dang li van de dang quan tam ciia cic nha phan loai hpc. Nhung dan lifu khoa hpc ve mat hinh thii va sinh hpc phan tir ngay cang dugc bd sung de xic dinh mpt each diing dan vj tri phan loai ciia phan hp Chu ding va tir do gdp phan lam sing td moi quan hf hp hang giira 2 hp Tnic dao - Apocynaceae vi hp Thien ly - Aselepiadaceae, Nhihig thdng tin khoa hpc ciia phan hp Chu dang d Ddng Duong ciing nhu d Vift Nam se gdp phan khdng nhd de giai quyet van de tren. Chinh vi vay chiing tdi da tien hanh nghien cuu phan hp Chu dang d Vift Nam vdi de tai: "Phan hp Chu dang - Periplocoideae thupc hp Thien ly - Aselepiadaceae d Vift Nam".

L PHirONG PHAP NGHIEN CUtT Phuang phap so sinh hmh thii dugc ip dyng frong nghien cuu nay. Day la phuong phap tmyen thdng trong phan loai hgc thye vat.

n. KET QUA NGHIEN CUtJ 1. Subfam. Periplocoideae R. Br. ex Endl. Phan hg Chu dSng Endl. 1838, Gen, PI. 2: 587; S, Liede & F, Albert, 1994, Taxon 43: 203. Bao phan 4 d, hat phan hgp thanh nhdm 4 hoac dinh thanh khoi phan nhung khdng cd sip bao ben ngoai vich khoi phan. Co quan tmyen phan hinh thia cd day md rpng thanh dia dinh mem, khdng cd gdt dinh, Typus: Periploca L, Phan hp Chu ding gdm 1 tdng Chu ding (Trib. Periploceae) 2. Khoa djnh loai cac chi ciia phan hp Chu dSng (Periplocoideae) thupc hg Thien ly (Aselepiadaceae) d Vift Nam 1 A. Cay byi dung 1. Telectadium IB, Cay leo hay trudn, 2A, Trang phy dinh vdi trang. 3A, Tiln khai hoa van 2. Hemidesmus 3B, Tien khai hoa van. 4A, Vay trang phy khdng xe thiiy,. 3. Cryptolepis 4B. Viy trang phy xe sau thanh 2 thiiy 4. Zygoslelma 2B, Tring phy khdng dinh vdi tring. 5A. Giira cac chi nhj khdng cd tuyen. 6A. Viy trang phy hinh trimg 5. Gymnanthera

Ltn cam om: Cac tac gi4 xin chSn thanh c4m on sv giup (15 cua de tai "Tiem nang sinh hpc cua nguyen ii?u sinh hoc a Vi?Viet Nam'" ^

28 HQI NGHI KHOA HQC TOAN QUOC V£ SINH THAI VA TAI NGUYEN SINH VAT LAN THU' BA

6B. Vay trang phu hinh sgi 6, Finlaysonia 5B. Giira cac chi nhi cd tuyen, 7A. Mat trong cua dai khdng cd tuyen d diy, 8A, Viy trang phy ngin, hinh tam giie 7, Alherolepis 8B. Viy trang phu dai, hinh sgi %. Atherandra IB. Mat trong cua dai cd tuyen d diy, 9A, Bao phan cd ldng, Thiiy trang phu chia 3 phan, phan d giira dang sgi, 2 phan ben rdng ra dang cii nip tiii 9, Periploca 9B. Bao phan nhan. Thiiy tring phu khdng chia thanh 3 phan nhu tren lOA. Qui khdng cd gd nhu cinh, cd long day 10. Streptocaulon lOB. Quacd gd nhu canh, nhin 11. Myriopleron 3. Mo ta cac chi cua phan hp Chu dang d Vift Nam 3.1. Telectadium Baill.-Vf tuyen Baill. 1889. Bull. Soc. Linn. Paris 2: 801; Cost. 1912. Fl. Gen. hidoch. 4: 36; Endress & Bmyns, 2000. Bot. Rew. 66(1): 44, - Ten Vift khic: Phao ludi. Cay byi dung. Li mpc ddi hay ddi khi mpc vdng, thudng thudn hfp. Cym hoa cd li bic rat phat trien, Ny rdng d dudi hem tren, Trang hinh binh xe; cinh hoa vin, phu nhau phii. Trang phy gom 5 viy day, Chi nhj rdi; bao phan 4 d; hat phan hop thinh nhdm 4; co quan truyen phan hinh thia cd day md rpng thanh dia dinh mem. Typus: Telectadium edule Baill. Cd khoang 3-4 loii phan bd d nhift ddi Chau A. 6 Vift Nam cd 3 loai: Telectadium edule Baill.-Vf tuyen ngpt, Telectadium linearicarpum Pierre ex Cost,-Vf tuyen la hpp, Telectadium dongnaiense Pierre ex Cost,-Vf tuyen dong nai Khoa djnh loai cac loai ciia chi Telectadium is Vift Nam 1 A, Co quan truyen phan cao hon hay bing 2mm, ong tring khdng chia thinh 2 phan 2A, Qui hinh biu dye /. T. edule 2B. Qua hinh dii 2, T. linearicarpum IB, Co quan truyen phan cao 1,1-1,4mm, dng trang chia thanh 2 phan rd (phan gde phong to len dang cau, phan tren thu hpp lai thanh dang hmh try) 3. T. dongnaiense 3.2, Hemidesmus R, Br.-Bin frang R, Br 1810. Asclep. 45; id, 1811, Mem, Werner Nat. Hist. Soc. 1: 56; Hook, f 1883. Fl, Brit, hid, 4: 4; K. Schum, in Engl, & Pranti, 1895, Nat, Pflanzenfam, 4(2): 218; Decne, m A, DC, 1844, Prodr. 8:494; Cost. 1912. Fl. Gen. hidoch. 4: 15; Endress & Bmyns, 2000. Bot. Rew, 66 (1): 43. Cay byi trudn. Li mpc doi, hiem khi mpc chym 4. Cum hoa ngin, nhanh ngin, it hoa, Ny hmh triimg-ndn, Dai ngin, hinh tning, gde dai cd 5 tuyen, Tring hinh binh xe; tien khai hoa van, dng tring ngin hon thiiy trang, Viy trang phy 5, ngin, nac, dinh vdi trang, Chi nhj rdi hay gan rdi, chi nhj dinh d goc trang, thudng dai, uon cong ra phia ngoai; bao phan 4 d, gin vdi dau nhyy, bao phan cd phin phu dang la ngin; hat phan hpp thanh nhdm 4; co quan tmyen phan hinh thia cd diy md rpng thanh dia dinh mem. Qua thudng gdm 2 dai. Typus: Hemidesmus indicus (L.) R. Br. ex Schult.

29 HQI NGHI KHOA HQC TOAN QUOC V£ SINH THAI VA TAI NGUY£N SINH VAT LAN THLf BA

Cd khoang 2 loii phan bd d Chau A tir An Dp din Vift Nam, Thai Lan, Malaixia, Xrilanca. Q Vift Nam cd 1 loai: Hemidesmus indicus (L.) R. Br, ex SchuU.-Bin trang 3.3, Cryptolepis R, Br,- An lan R, Br, 1810, Asclep, 58; id, 1811, Mem, Wemer, Nat, Hist, Soc, 1: 69; Hook, f 1883, FI, Brit, hid, 4: 5; K. Schum. in Engl. & Pranfl, 1895, Nat, Pflanzenfam, 4(2): 219; Cost, 1912, Fl, Gen. Indoeh. 4: 23; Back. & Bakh. f 1965. Fl. Java 2: 250; Tsiang & Li, 1977. Fl. Reip. Pop. Sin, 63: 262; P, T, Li & al, 1995, Fl. China 16: 193; Endress & Bmyns, 2000, Bot, Rew, 66 (1): 43, _ Ten Vift khic: Cang cua. Cay bui trudn. La mpc ddi, hmh biu due din thudn, cd nhieu gan nam ngang. Cum hoa xim, it hoa. Nu hoa keo dai thinh hinh cii khoan, Thuy dai nhd, dau gan tii; gde dai cd 5 hay nhieu tuyen (vay), Trang hinh binh xe, tiln khai hoa van, phii nhau phai; dng trang ngin hon thiiy trang, Trang phu cd 5 vay nac, khdng xe thiiy, gin hinh friing, dinh d giua dng trang. Chi nhj ngin, rdng d dudi, hpp d tren, dinh nhau mdt phan d diy; bao phan 4 d, dinh vio dau nhuy tao thinh dang ndn nhpn; hat phin hpp thanh nhdm 4; co quan truyen phan hinh thia cd day md rdng thanh dTa dinh mem. Dau nhyy hinh ndn rdng. Qua gdm 2 dai, tda rpng, nhan. Typus: Cryptolepis buchananii Roem. & Schult. (vide S. Liede & F. Albers, 1994). Cd 12 loai d Chau A va nhiet ddi Chau Phi. 6 Vift Nam cd 2 loai: Cryptolepis buchananii Roem. & Schult. -An lan buchana, Cryptolepis sinensis (Lour.) Merr. Day li bac. Khda djnh loai cac loai cua chi Cryptolepis a Vift Nam IA, Gin ben 25-30, dai nhin 1, C, buchananii IB. Gan ben 5-9, dai cd long 2. C. sinensis 3.4, Zygostelma Benth, (Day) Dy gdt Benth, in Benth, & Hook, f 1876. Gen. PI. 2: 740; K. Schum, m Engl. & Pranti, 1895. Nat. Pflanzenfam. 4(2): 221; Cost. 1912. Fl. Gen. fridoch. 4: 18; Endress & Bmyns, 2000. Bot, Rew. 66 (1): 44, -Ten Vift khic: Xy got. Cay byi leo hay tmdn. Li mpc doi, thudn. Cum hoa xim, ngan, it hoa. Ny rdng ra d dudi, hinh chiiy dai, vin d tren. Thuy dai ngin, hinh bau dye hay hinh friing; d gde dai cd 5 tuyin. Trang hinh binh xe, nac; cinh hoa hinh tning, tiln khai hoa van, phu nhau phai; dng trang ngin hem thiiy trang. Trang phy gom 5 viy, mdi viy xe sau thanh 2 thiiy, dinh vdi trang. Chi nhj ngin, dinh nhau d phan dudi (gin rdi); bao phin 4 d; bao phin keo dii thanh phin phy mdng va ndi vdi dau nhuy phdng len tao thanh hinh ndn, hat phan hpp thanh nhdm 4; co quan tmyin phan hinh thia cd diy md rpng thinh dTa dinh mem. Typus: Zygostelma benlhamii Baill, (vide S, Liede & F, Albers, 1994). Cd 1 loii phan bo d vimg Ddng Nam A (Lio, Vift Nam, Campuchia, Thai Lan): Zygoslelma benlhamii Baill. -(day) Dy gdt 3.5, Gymnanthera R. Br, - Loa ti gia R, Br. 1810. Asclep, 47; id, 1811. Mem, Werner, Nat. Hist, Soc. 1: 58; K. Schum. in Engl. & Pranfl, 1895. Nat, Pflanzenfam, 4(2): 213; Cost. 1912. Fl. Gen, Indoeh. 4: 20; Back, & Bakh. f. 1965, Fl, Java 2: 248; Tsiang & Li, 1977, Fl, Reip, Pop, Sin. 63: 260; P. T. Li & al. 1995. Fl,

30 HOI NGHI KHOA HQC TOAN QU6C V£ SINH THAI VA TAI NGUYEN SINH VAT LAN THlJ BA

China 16: 193; Endress & Bmyns, 2000, Bot. Rew. 66 (1): 43. - Ten Vift khac: Loa himg. Cay bui leo hay tmdn, cd nhieu nhanh. La mpc ddi, hinh tning hay thudn. Hoa hpp thanh xim 2 nga mpc d nich la. Nu hinh tning rpng hay hinh try d dudi. Li dai ngin, rpng, nhpn diu; goc dai cd 5 den nhieu tuyen. Trang hinh binh xe, thuy trang hinh trimg rdng den hinh tning, van, phu nhau phii, Tring phy dinh vdi chi nhj hay dinh gan vdi nhj; vay frang phy rdng, rdi, hinh trirng, nhpn diu, nguyen hay xe 2 thiiy, khdng dinh vdi trang, Chi nhj rdi, rdng d gde, dinh d phin tren cao cua trang, giira cic chi nhi khdng cd tuyen; bao phan 4 d, hat phan hpp thanh nhdm 4; co quan tmyin phan hinh thia cd diy md rpng thinh dTa dinh mem. Dau nhyy hinh ndn ngin. Qui thudng gom 2 dai, Typus: Gymnanthera oblonga (Burm, f) P, S, Green Cd 2 loai d viing nhift ddi Chau A va Chau Uc. O Viet Nam cd 1 loai: Gymnanthera oblonga (Burm, f) P, S, Green - Loa ti gii 3.6, Finlaysonia Wall, - Phin lai son Wall. 1831, PI, Asiat, Rar. 2: 48, t, 162; Hook, f 1883, Fl, Brit, hid, 4: 7; K. Schum. in Engl. & Pranti, 1895. Nat. Pflanzenfam. 4(2): 211; Cost. 1912. Fl. Gen, fridoch. 4: 19; Back, & Bakh, f 1965, Fl, Ja^'a 2: 248; Endress & Bmyns, 2000, Bot, Rew, 66 (1): 43, - Ten Vift khac: Lay son. Cay bui leo hay trudn, nhin, Li mpc ddi, Cym hoa ngin, nhanh ngin, Nu hinh bau due, Thuy dai hinh tning ngin. Trang hinh binh xe, mat trong cd long; cinh hoa vin, phii nhau phii, Trang phy nim gan vdi nhj, khdng dinh vdi trang, vay trang phy rdi, hinh sgi. Chi nhj rdi, giira cic chi nhj khdng cd tuyen; bao phan 4 d; hat phin hpp thanh nhdm 4; co quan tmyen phan hinh thia cd diy md rpng thinh dTa dinh mem, Dau nhyy cd 5 canh, phia tren phang. Qui day, chieu dpe cd 1-4 khia hay cd cinh. Hat cd mao ldng ngan, Typus: Finlaysonia obovata Wall. Cd 6-7 loai phan bo d An Dp, Mianma, Vift Nam, Thii Lan, Malaixia, Indonexia (Java). Q Viet Nam cd 1 loai: Finlaysonia obovata Wall. -Phin lai scm, 3.7, Atherolepis Hook, f-Gai lan Hook, f 1883, Hooker' Icon, PI, 14:. 26, t. 1433; id. 1883. Fl, Brit, hid, 4: 8; K, Schum. in Engl, & Pranti, 1895. Nat. Pflanzenfam. 4(2): 214; Cost. 1912. Fl. Gen, fridoch, 4: 28; Endress & Bmyns, 2000, Bot. Rew. 66 (1): 43. Cay byi leo hay trudn. La mpc doi. Cym hoa rat ngin. Ny hinh ndn, vin d tren, cd ldng, Thuy dai ngan, hinh tning, mit trong cua dai khdng cd tuyen d day, Trang hinh hanh xe, cinh hoa ngin, dang trimg, vin, phii nhau phii, Trang phu dinh vdi nhj hay dinh gin vdi nhi; vay trang phy rdi, ngan, hinh tam giie, Chi nhj rdi hay gan rdi, ngin, giira cac chi nhj cd tuyen gan trdn; bao phan 4 d; hat phin hpp thanh nhdm 4; co quan tmyin phan hinh thia cd diy md rpng thanh dTa dinh mem; tmng ddi keo dii thanh phan phy dii tii dau. Diu nhuy nhd, tii. Typus: Alherolepis wallichii (Wight & Am.) Hook. f. Cd 2 Ioai d vimg Chau A tir AJI Dp den Vift Nam. d Vift Nam cd 1 loai: Alherolepispierrei Cost.-Gai Ian

31 HQI NGHj KHOA HQC TOAN QU6C V£ SINH THAI VA TAI NGUY£N SINH VAT LAN THLf BA

3.8. y4r/iera/Kfra Decne.-Gai himg Decne. in A. DC. 1844. Prodr 8: 497; Hook, f 1883, Fl, Brit, Ind. 4: 9; K, Schum. in Engl. & Pranfl, 1895. Nat, Pflanzenfam. 4(2): 214; Cost. 1912, Fl. Gen. Indoeh, 4: 26; Back, & Bakh. f 1965, Fl, Java 2: 249; Endress & Bmyns, 2000. Bot. Rew. 66 (1): 43. Cay byi leo hay tmdn, nhln hay cd long, cd nhieu nhanh nhd. Li mpc doi, thudn hay biu due, dinh nhpn. Mat frong cua dii khdng cd tuyen d day. Cum hoa xim d tan ciing hay d nich la, Nu hoa hinh cai md. Thuy dii hinh diii, nhpn dau; gde dai khdng cd tuyen. Trang hinh binh xe; thuy trang dii, manh khinh, uon cong lai, vin, phu nhau phii. Tring phy gdm 5 viy, rdi, dai, hinh sgi, dinh vdi chi nhj. Chi nhj rdi, dai, hinh sgi, giira chiing cd nhieu tuyen; bao phan 4 d, dinh vio diu nhuy, hmh mui ten; trung ddi keo dai thinh miii nhpn vugt qui cic d phan; hat phin hpp thanh nhdm 4; co quan tmyin phan hmh thia cd diy md rdng thanh dTa dinh mem. Diu nhuy cao, hinh ndn vi chia 2 thiiy. Typus: Atherandra acutifolia Decne, Cd 1 loii phan bd d Java, Sumatra, Vift Nam: Atherandra acutifolia Decne.-Gai himg miii. 3.9. Periploca L. - Chu ding L, 1753, Sp. PI. 211; id, 1754. Gen. PI. ed, 5, 100; Hook, f 1883. Fl. Brit. Lnd. 4: 11; K. Schum, in Engl. & Pranti, 1895. Nat. Pflanzenfam. 4(2): 216; Tsiang & Li, 1977. Fl. Reip. Pop. Sin, 63: 272; P, T. Li & al. 1995. Fl. China 16: 195; Endress & Bmyns, 2000. Bot. Rew. 66 (1): 43. Cay byi leo. La mpc doi. Cym hoa dang xim d dau canh hay d ngoai nich la, manh. Thuy dai ngin, 3 canh, diu nhpn hay tu; d goc dai cd 5 tuyen. Tring hinh binh xe; canh hoa nam ngang, van, phil nhau phii, cd nhieu ldng. Trang phu dinh gan vdi nhj, khdng dinh vdi trang; vay trang phy chia 3 phan rd rft, dinh nhau d day. Chi nhj rdi, ngin, rpng, giira cac chi nhj cd tuyen; bao phan 4 d; d mit lung bao phan cd ldng; bao phan thing, ndi vdi dau nhyy phong len, tan cimg cd phan phy ngin va nhpn; hat phan hpp thinh nhdm 4; ca quan tmyin phan hinh thia cd day md rpng thanh dTa dinh mem. Typus: Periploca graeca L. Cd khoang 10 loai phan bo d nhift ddi Chau A, nam Chau Au va nhiet ddi Chau Phi. Q Vift Nam cd 1 loai: Periploca calophylla (Wight & Am.) Falc, -Chu ding la hpp. 3.10. Streptocaulon Wight & Am.-Ha thu d nam Wight & Am. 1834, Confr. Bot. frid. 64; Benth. & Hook, f. 1876. Gen. PI. 2: 744; Hook, f 1883, Fl, Brit. frid. 4: 9; K, Schum, in Engl, & Pranfl, 1895. Nat. Pflanzenfam. 4(2): 214; Cost. 1912, Fl, Gen. fridoch. 4: 30; Back. & Bakh. f 1965. Fl. Java 2: 249; Tsiang & Li, 1977. Fl, Reip, Pop, Sin, 63: 267; P. T. Li & al. 1995. Fl. China 16: 194; Endress & Bmyns, 2000. Bot. Rew. 66 (1): 44. - Ten Vift khic: B^c cin. Day sQra. Cay byi leo hay frudn, nhilu ldng. Li mpc doi, hinh tning, biu dye hay tning nguge. Cym hoa xim thua hay day dac, mang cic hoa nhd. Thuy dai nhd, hinh tning nhpn dau; mat trong ciia dai cd 5 hiyen nhd d gde. Trang hinh binh xe; ong trang ngin; thuy tring hinh friing, vin va phu nhau phii. Trang phy gdm 5 vay hinh sgi, rdi, dinh vdi chi nhj. Chi nhj rdi, giira cac chi nhj cd cic tuyen rat nhd; bao phan 4 d, nhln, noi vdi dau nhyy loi cao; frung ddi keo dai len phia tren

32 HQI NGHI KHOA HQC TOAN QUOC V£ SINH THAI VA TAI NGUY£N SINH VAT LAN THU' BA thanh phan phy dai dang la, nhpn dau; hat phan hpp thanh nhdm 4; co quan tmyin phin hinh thia cd diy md rpng thinh dTa dinh mem. Qua khdng cd gd nhu canh, mat ngoai cd ldng day. Typus: Streptocaulon kleinii Wight & Am. Cd khoang 5 loai phan bd d Chau A. Q Vift Nam cd 3 loai: Streptocaulon juventas (Lour.) Merr, - Ha thu d nam, Streptocaulon kleinii Wight & Am, -Bac cin nhd, Streptocaulon wallichii Wight - Bac cin wallich. Khda djnh loai cac loai ciia chi Streptocaulon it Vift Nam 1 A. Cuong hoa cd ldng 2A, Gan ben 14-20 cap. Co quan tmyen phan dai khoang 350|im 1, S. juventas 2B, Gin ben it hon 13 cap, Co quan tmyen phan dai khoing 540|im 2. S. kleinti IB, Cudng hoa nhan 3, 5, wallichti 3.11, Myriopteron Griff -Bach cin gii Griff 1844. Calcutt. Joum. Nat. Hist. 4: 385; Hook, f 1883. Fl. Brit. frid. 4: 10; K. Schum. in Engl. & Pranti, 1895. Nat. Pflanzenfam, 4(2): 215; Cost. 1912, Fl, Gen, fridoch. 4: 35; Tsiang & Li, 1977. Fl, Reip, Pop, Sin, 63: 270; P, T. Li & al. 1995. Fl. China 16: 194; Endress & Bmyns, 2000. Bot. Rew. 66 (1): 43. - Ten Vift khic: Si qui ding. Cay leo hay byi frudn. Li mpc doi. Thuy dii nhd, hinh frimg tii dau, cd nhilu tuyin nhd d goc. Trang dang binh xe; thuy tring nhd, manh khanh, dang thudn, van phii. Trang phy gom 5 vay dang sgi, rdi; phin gde md rgng dinh vao chi nhj. Chi nhj dinh nhau d gde, cd nhieu vay nhd mpc xen ke, bao phin 4 d, nhin, dinh vao diu nhyy; tmng ddi keo dai ra thanh phin phy nhpn dau; hat phan hpp thinh nhdm 4; co quan tmyen phan hinh thia cd diy md rpng thanh dTa dinh mem. Diu nhuy phdng len. Qui cd nhieu gd nhu cinh. Typus: Myriopteron paniculatum Griff Cd 2 loii phan bd tir An Dp den Nam Tmng Qude, Ddng Duong va Inddnexia. 0 Vift Nam cd 1 loai: Myriopteron extensum (Wight & Am.) K. Schum. -Bach can gii

IIL KET LUAN Phan hp Chu ding (Periplocoideae) d Vift Nam gom 11 chi vdi 16 loai. Dac diem cic chi va sy phan bift cic loii ciia mdi chi thupc phin hp Chu ding da hoin thanh. Phan hp Chu ding phan bift vdi cic phan hp khic cua hp Thien ly (Aselepiadaceae) bdi die diem "co quan tmyen phan huih thia cd diy md rpng thanh dla dinh mem, khdng cd gdt dinh".

TAI LIfU THAM KHAO 1. Tran The Bach, 2005: Danh lyc cic loai thye vat Vift Nam. T3: 58-75, NXB. Ndng nghifp. 2. Backer C. A., R. C. Bakhuizen Van der Brinkjr, 1965: Flora of Java 2: 245-274. Noordhoff, Gconmger, the Netherlands. 3. Bentham G., J. D. Hooker, 1876: Genera Plantamm, 2: 681-785, London.

33 HQI NGHj KHOA HQC TOAN QU6C V£ SINH THAI VA TAI NGUY£N SINH VAT LAN THU' BA

4. Brown R., 1810: On The Asclepiadeae, a natural order of plants separated from Apocineae of Jussieu. London. 5. Costantin J., 1912: Flore Generale de L' Indo-Chine 4(1): 1-154, Masson et Cie, Paris. 6. Pham Hoang Hp, 1993: Cay cd Vift Nam 2(2): 910-949. Monfreal. 7. Pham Hoang Hp, 2000: Cay cd Vift Nam 2: 724-755. NXB. Tre. 8. Li P. T., M. G. Gilbert, W. D. Stevens, 1995: Flora of Chuia 16: 193-270. United States. 9. Linnaeus C, 1753: Species Plantamm, 1: 214-218. 10. Schumann K, 1895: Die Naturlichen Pflanzenfamilien, 4(2): 189-310, Leipzig.

SUBFAMILY PERIPLOCOIDEAE (ASCLEPIADACEAE) IN VIETNAM

TRAN THE BACH, VU TIEN CHINH, DO VAN HAI BUI HONG QUANG, JOONGKU LEE

SUMMARY At present, the position of subfamily Periplocoideae has not been resolved. The taxonomy o/this subfamily will confribute to establish the phylogeny of Apocynaceae s,l.. Stmcture of translator distinguishes the subfamily from other families. In Vietnam, the subfamily includes 11 genera Telectadium, Hemidesmus, Cryptolepis, Zygostelma, Gymnanthera, Finlaysonia, Alherolepis, Atherandra, Periploca, Streptocaulon and Myriopteron. Telectadium is determined by characters such as erect plants, franslator^ spoon-shaped. The important characters of other genera are liana.? and franslatorj spoon-shaped. Hemidesmus is determined by characters as "corona attache^/ lo corolla, buds valvate". Cryptolepis is determined by characters as "contorted bud.y, corona lobes entfre". Zygoslelma is determined by characters as "contorted bud, corona lobes 2-divic/ed". Gymnanthera is determined by characters as "coronas separate from corolla and corolla lobes ovate-shaped". Finlaysonia is determined by characters as "corona separate from corolla and corolla lobes thread-shaped". Alherolepis is determined by characters as "corona lobes short and friangular, calyx without basal glands". Atherandra is determined by characters as "corona lobes thread, calyx without basal glands". Periploca is determined by characters as "calyx with basal glands, anther hair", Streptocaulon is determined by characters as "calyx with basal glands, anther glabrous and fmit without wings". Myriopteron is determined by characters as "calyx with basal glands, anther glabrous and fmit with wings".