Howard (1940 —42) Family for Africa. Inch Madagascar, Without, However
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Materials towards the knowledge of the Icacinaceae of Asia, Malesia, and adjacent areas H. Sleumer Contents I. Introduction 181 the of Pacific 2. Key to genera Icacinaceae in Asia, Malesia, Australia, and the 182 3. The genus Apodytes E. Mey. ex Arn. in Asia and Malesia 184 The Ridl 4. genus Cantleya 186 in 5. The genus Citronella D. Don Malesia and the Solomon Islands 186 6. The genus Codiocarpus Howard in Malesia 188 A 7. revision of the genus Gomphandra Wall, ex Lindl 189 of 8. A revision the genus Gonocaryum Miq 209 9. Hartleya Sleum., a new genus from New Guinea 218 The in Asia 10. genus Iodes Bl. Southeast and Malesia 219 The Hand.-Mazz II. genus Mappianthus 225 The Seem, in 226 12. genus Medusanthera Malesia The Merrilliodendron Kaneh 13. genus 228 The Meisn. in 14. genus Miquelia Malesia 229 The 15. genus Natsiatum Buch.-Ham 231 16. The genus Nothapodytes Bl 232 A 17. revision of the genus Phytocrene Wall 234 The 18. genus Pittosporopsis Craib 241 19. A revision of the Platea Bl genus 242 20. The genus Polyporandra Becc 248 21. The genus Pseudobotrys Moeser 248 22. The genus Pyrenacantha Hook, in Malesia 249 A 23. revision of the genus Rhyticaryum Becc 249 A 24. The genus Sarcostigma W. & 253 A 25. revision of the genus Stemotiurus Bl. emend. Becc 255 26. Whitmorea from the Solomon Islands 263 Sleum., a new genus 1. Introduction the first for the In present work details are given in the place Malesian Icacinaceae, the basis of of the in ‘Flora Malesiana’ representing my forthcoming treatment family in which full descriptions of the Malesian genera and species will be given. Being connect- ed closely with the Icacinaceae of South and SoutheastAsia on the one, and with Australia and the Pacific on the other and with those ofAfrica inch side, in part even Madagascar, it has been the materials necessary to study respective too, without, however, to perform a ofall these of the world. This theless complete revision Icacinaceae in parts was necessary, of The as R. A. Howard (1940 —42) already has revised part the genera concerned. knowl- elaboration of the family in several local treatments has much contributed to our edge of the family for Africa. Of the included in Asiatic-Malesian Icacinaceae Leucocorema Ridl. has genera formerly No. 182 BLUMEA VOL. XVII, :, 1969 been transferred to Trichadenia Thwait., Matpania Gagnep. to Bouea Meisn., and Peti- tastira Ridl. to Dichapetalum Thou. Herbarium Malesia from loans specimens (rather completely for only) were studied herbaria: from, resp. partly during visits to the following Berkeley (UC, Philippine specimens only), Bogor (BO), Cambridge (CGE), Cam- Florence bridge, Mass. (A, in part, or cited from list), Copenhague (C), Edinburgh (E), (FI), Geneva (G), Kepong (KEP), Kew (K), Kuching (SAR), Leyden (L), London (BM), Paris (P), Sandakan (SAN), Singapore (SING), Stockholm (S), Uppsala (UPS), Utrecht (U), Wroclaw (WRSL, Herb. Lauterbach). Generally no collector's names in serial herbarium materials are mentioned. The following abbreviations are used: ANU = Australian National University, Canberra. at bb. = bosschen buitengewesten, i.e. collections outside Java of the Forest Research Institute Bogor, Java. B.N.B. For. Dep. = British North Borneo Forestry Department. BRUN Brunei. = Forestry Department B.S. = Bureau of Science, Manila. BSIP Protectorate. = British Solomon Islands BW = Boswezen (in New Guinea). Forest Cel = Celebes collections of the Research Institute at Bogor, Java. CF. = Conservator of Forests, early series of the Forest Research Institute, Kepong. F.B. = Forestry Bureau, Manila. F.M.S. = Federated Malay States (Museum). F.R. = Forest reserve. FRI = Forest Research Institute, Kepong. F.R.I. = Forest Research Institute, at Bogor, Java. H.B. = Herbarium Bogoriense. I. = island (Is = islands). = Institute Ja. Java collections of the Forest Research at Bogor, Java. KEP =Forest Research Institute, Kepong. Mt = Mount. NGF = New Guinea Forest Department, Lae. n.v. =non vidi (specimens not seen by the author). P. s= Pulu (island). P.F. = Protected forest. Surv. Phyt. Malaya = Phyto-Chemical Survey of the Federation of Malaya, Kuala Lumpur. PNH = Philippine National Herbarium, Manila. S Forest = Department of Sarawak, Kuching. SAN = Forest Department of North Borneo (Sabah), Sandakan (ditto SAN A). SF = Singapore Field Number. Sg. = Sungei (river valley). 2. KEY TO THE GENERA OF ICACINACEAE IN ASIA, MALESIA, AUSTRALIA, AND THE PACIFIC¹) I. Trees or (not climbing) shrubs. (Leaves always spiral.) free least in their and imbricate. 2. Sepals essentially at upper f part, 3. Flowers bisexual. 4. Petals free, valvate or subimbricate. Tropical C. and S. America (flowers there sometimes polygamous), Malesia, Australia (New South Wales, Queensland), Solomon Is, New Caledonia, Loyalty Is, New Hebrides, Samoa, Fiji, Tonga Citronella Petals connatebelow into their free and valvate in bud. New Guinea. 4. a tube, upper part Pseudobotrys the in 1) Only genera printed bold letters are treated in this paper. H. Sleumer: Icacinaceae 183 Flowers unisexual 3. (or functionally so, i.e. the plant dioecious). (Petals connatebelow.) Filaments free, fixed the base of the 5. to very petals. Leaves with a layer ofrounded to star- scales least the Malesia shaped appressed underneath, at in young state. SE. Asia, incl. New Britain Platea Filaments adnate for almost their entire the lower tubular of 5. length to part the petals. Scales absent. SE. Asia incl. Formosa, Malesia Gonocaryum connate into a their free 2. Sepals cup-like calyx, upper part (calyx lobes), if any, short and not imbricate. 6. Flowers unisexual (or functionally so, i.e. the plant dioecious). 7. Drupe ovoid-ellipsoid or oblongoid, without a fleshy lateral appendage. 8. Flowers in terminal panicles. Style short. Australia (New South Wales, Queensland), Norfolk I., New Zealand Pennantia Flowers in rather short incl. 8. axillary cymes. Style none. SE. Asia Ceylon and India, Malesia incl. New Britain and New Ireland, Solomon and Santa Cruz Is, Australia (Queensland). Gomphandra 7. Drupe laterally compressed (almond-like). without a fleshy lateral Flowers in in 9. Drupe appendage. spikes (or very rarely panicles of E. New composed spikes, or reduced to a few-flowered fascicle). Malesia incl. Britain, New Ireland, and Admiralty Is, Solomon Is, Australia (N. Queensland). Rhyticaryum 9. Drupe with a thick-fleshy laterally borne practically entirely adnate appendage. Flowers in cymes. 10. Fertile ovary (besides the appendage) with an almost free, thick-squamular unilateral disk. New Guinea Hartleya 10. Fertile ovary without such a free disk. 11. Filaments glabrous. Fleshy appendage of drupe covering 2 pronounced longitudinal ribs of the endocarp. Andaman & Nicobar Is, Philippines (Mindoro, Palawan). Codiocarpus 11. Filaments with distal, longish, club-shaped hairs at least in the fertile stamens. Endocarp with less pronounced or no such ribs under the appendage. 12. Drupe plano-convex, the fleshy appendage on the convex surface of the fruit surmounting a T-shaped keel of the endocarp, the other surface plane or but slightly concave. Australia (N. Queensland) Irvingbaileya 12. Drupestrongly curved, the fleshy appendage on the concavesurface, the other surface convex with the endocarp strongly ridged lengthwise. Malesia incl. Bismarck Archipelago, Caroline (Palau) Is, Solomon Is, Fiji, Samoa. Medusanthera 6. Flowers bisexual. which in 13. Ovary with a lateral swelling the fruit developes into a thick succulent appendage. Disk unilateral scale free from the New Caledonia. 14. present, a fleshy appendage. Gastrolepis 14. Disk absent. 15. Petals with a prominent midrib inside. New Caledonia Anisomallon 15. Petals without a prominent midrib inside. Africa incl. Madagascar, Comores, Mauritius, and Reunion, S. & SE. Asia, W. Malesia, Australia (Queensland). Apodytes and fruit without 13. Ovary such an adnate appendage. Disk present or not. 16. Connective surpassing the anther-cell as a marked glabrous apiculus. adnate of 17. Disk cup-shaped, to the ovary. Endocarp drupe hard, rather thin. SE. Asia. Pittosporopsis 17. Disk absent. Endocarp of drupe thick, outer part finally spongious-corky and deeply irregularly lacunose. E. Malesia incl. Bismarck Archipelago, Solomon Is, Marianas (Rota), and Caroline Is (Kusaie) Merrilliodendron 16. Connective, if any, hardly or not surpassing the anther-cell. 18. Peduncle ofinflorescence with numerous small knob-like bracts which form alveoles. Stigma peltate. Disk absent. W. Malesia Cantleya 18. Peduncle of inflorescence quite smooth. Stigma small, subcapitate or point-like. Disk ± cup-shaped. & I. 19. Inflorescence usually terminal. Anthers glabrous. S. SE. Asia incl. Lan Yu and Ryu Kyu Is, S. & C. China, W. Malesia Nothapodytes 19. Inflorescence axillary. Anthers with a distal tuft of penicillate hairs. 184 BLUMEA VOL. XVII, No. I, 1969 6 20. Flowers sessile. Petals up to mm, free to almost the base. Stigma point- like the of the at top upper ± attenuate (sometimes shortly style-like) part of the SE. Asia incl. Micronesia and ovary. Ceylon, Malesia, (Palau), Solomon Is Stemonurus Flowers in 20. pedicelled for I —2 mm. Petals (12—)i3—15 mm, free the distal side of the i.e. distal part only. Stigma small, on one inverted, cup-like part Is Whitmorea of the ovary. Solomon with tendrils. Flowers unisexual 1. Climbingshrubs, orlianas, sometimes orfunctionallyso, orpolygamous. 21. Leaves opposite. 22. Anthers broadly club-shaped to subglobular, many-celled, with numerous pollen-bearing alveoles. New Guinea, Solomon Is Polyporandra 22. Anthers, as usual, with 2 cells. 23. Filaments (very) short in relation to the petals. Stigma small, capitate, with a ± deep smooth depression to oneside. Endocarp generally coarsely reticulate-lacunose, very rarely outside. Africa incl. Madagascar, SE. Asia, Malesia lodes Filaments in to —6)-crenulate. 23. elongate relation the petals. Stigma capitate, ± distinctly 5( Endocarp rather finely tubercled inside. SE. Asia, W. Malesia Mappianthus 21. Leaves spirally arranged. Tendrils never present. these sometimes collected 24. Flowers in elongate spikes or spike-like racemes, solitary or to panicles. S. & SE. 25. Leaves ± elliptic, coriaceous, glabrous, entire, much reticulate.