Malesia, from the Closely Related Willughbeia by Cylindric Corolla
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Florae Malesianae Praecursores LIII. Apocynaceae II. 6. Urnularia, 7. Willughbeia, 8. Kopsia F. Markgraf Institut fur Systematische Botanik der Universitat, Ziirich 6. URNULARIA Hook. t. Hist. Stapf, 1c. (1901) 2711; Merr., En. Born. (1921) 497; Pichon, Mém. Mus. Nat. Paris II, 24 (1948) 154; Bakh. f., Blumea 6 (1950) 385; Back. & Bakh. f., Fl. Java 2 (1965) 224. Glabrous lianas with branched axillary tendrils. Leaves decussate, coriaceous or sub- coriaceous, ovate, elliptic, or lanceolate. Inflorescences axillary, thyrsoid, slightly longer than the petioles of the subtending leaves, loose, with rather long slender branches. Flowers Pedicels with or bracteoles. lobes orbicular small, pentamerous. 1 2 Calyx to ovate, ciliate, without glands inside. Corolla urceolate, yellowish, tube inflated, globular, constricted at the mouth but without mouth scales; lobes ovate or ovate-oblong, obtuse, auriculate, as long as the tube, overlapping to the left, forming a cylindric bud much narrower than the tube. Stamens inserted in the middle of the tube, anthers short-ovate. Ovary superior, glabrous, conical, syncarpous, bicarpellate, unilocular, multiovulate. Style short. Stigma head widened from the style into a narrow dish and crowned by two Fruit short tips reaching up to the anthers. a globose yellow berry. Seeds ellipsoidal, exalbuminous; embryo with large and thick cotyledons and a short radicle. endemic in from the Distribution. 7 species, western Malesia, Malay Peninsula to Borneo. which Note. This genus is closely related to Willughbeia differs by a cylindric corolla tube, by congested inflorescences not longer than the subtending petiole (except in W. anomala), corresponding by fruits with a shorter stalk. The tendrils are modified inflorescences as in Willughbeia, Clitandra (Africa), and Landolphia (Africa and South America). Two of beccariana This genus was established by Stapf on 5 species. these, U. (Pierre) Stapf and U. beccarii (Pierre) Markgr. (= U. oblongifolia Stapf), were formerly described of under Ancylocladus. Pierre even made the latter species the type a new section, Cyclo- pholis, of Ancylocladus, which was acknowledged by Pichon, Mem. Mus. Hist. Nat. of Urnularia. Paris II, 24 (1948) 155, as a section This section was based by Pierre on leaf the in nervation, petiole anatomy, and especially on presence ofmouth scales the corolla. of this third could confirm the Rendering account to myself character, I not it in type the the specimen in herbarium of late M. Pierre kindly lent me by the Museum National It is Beccari Piante Bornensi which Pierre d'Histoire Naturelle. a duplum of n. 2272, on his flowers has carried out investigations. It presents only very young which, moreover, It Pierre time have become very hard by drying. must be appreciated how well at his has material. the (1898) analysed this refractory I had opportunity to observe again the flower the ofwhich had written 'corolle callosites on envelop Pierre ouverte avec squames ou — succeeded of 2 5 devant chaque petale'. Moreover, I in soaking by means tinovetinesome 408 BLUMEA VOL. XX, No. 2, 1972 herbarium better developed flowers of the same numberkindly lent me by the of Florence these like and in analyzing too. Just Stapf, in none of all flowers investigated I could perceive such mouth scales. But as the globose-inflated corolla tube becomes strongly constricted the the of thicker there. this at mouth, mass tissue gets Immediately at level are inserted the 5 auriculate corolla lobes. By spreading them out, even with precaution, the rise minute onecan not avoid to tug at mouth. Thus the impression may that a knob between the before each lobe. is neighboured to each gap lobes, i.e. seemingly two This Urnularia. may be observed in all species of But as already Pierre pointed out, they are free. behind these not One cannot go 'scales' with a needle, as is possible in the case of the real mouth scales of other Apocynaceae. Pierre's scrutiny being known, I felt obliged to look for the origin of the uncertainty. For this it useful that in his herbarium his sketches and exact notes are purpose proved added to the sheets. these that at first had taken the From it appeared Pierre specimen as Melodinus the scales characteristic a and was surprised to miss mouth for this genus: 'il la de la corolle les du Melodinus' and 'cette n'y a pas a gorge appendices particuliers plante de indique un Melodinus, mais en differe par le meristele ouverte et absence s qu am e s'. This note is dated 'M.P. 6/98'. Under the date 'PIERRE M.P. 7/98', 'squami gemini' are mentioned and used for into are defining a new genus Dinopholis, changed Cyclopholis. There has 'corollae been added in a very minute handwriting: tubus c a 110 s u s v e I g e m i n a t i m squamosus'. An addition to the description cited first (of June, 1898) in the minute same handwriting remarks: 'le sommet du tube est pourvu devant chaque lobe de des callosités 2 a 4 appendices sessiles, a peine libre en haut, se présentant plutôt comme que comme des appendices\ Apparently, he was not sure about them. In an undated sketch, well. litho- however, they are accentuated rather They appear still more distinct in a of This graphed drawing by M. Delpuy 1902 which is foundin several herbaria. drawing contains other doubtful details too: the globose shape of the corolla tube, not mentioned by Pierre, is not recognizable and the inflorescences are wrongly condensed and given a and thick of stiff rachis reminding a Melodinus. Pichon, in a very small drawing in Mem. Mus. Hist. Nat. Paris II, 24 (1948) t. 3 f. 28, shows single minute teeth. Apparently, he also has not seen true mouth scales. Mouth scales are in reality not present, as stated above, and hence the section Cyclo- pholis based on them cannot be maintained. KEY TO THE SPECIES with ratio 1. Leaves broad-ovate rounded base, strongly coriaceous, glaucous below, length/width c. —8 ovatifolia i£ (7 x 4J—5 cm), venation indistinct I. U. 1. Leaves less broad, length/width ratio 2—3, not glaucous below. Leaves 2. with rounded base, not shining. Inflorescence with c. 20—30 flowers. 3. Leaves coriaceous, elliptic, short-acuminate. Inflorescences 4 —5 cm long, most of their branches with 2 internodes. 4. Nerves bent forward, without intercalated veins; venation more discernable, consisting of fine veins transverse to the midrib and oblique to the nerves. Inflorescences loose, their branches thyrsoid with lower internodes of 7 —8 mm 2. U. beccariana vein 4. Nerves spreading, almost transverse to the midrib,with one distinct intercalated parallel between almost Inflorescences their branches with lower internodes every pair. dense, cymose U. flavescens of 2—3 mm 3. 3. Leaves subcoriaceous, oblong, long-acuminate; nerves transverse to the midrib, with more than one parallel intercalated vein between two nerves, without reticulation. Inflorescences loose, their branches with only one internode 4. U. beccarii 2. Leaves with acute to cuneate base, shining above, Inflorescences with c. 12 flowers. Leaves 1.8— without intercalated veins the 5. lanceolate, 5—8.5 x 3.5 cm, veins, oblique to nerves U. 5. lanceolata F. Markgraf: Apocynaceae II 409 Leaves $. lance-elliptic, with intercalated veins parallel to the nerves. 6. Leaves coriaceous, short-acuminate, 7—10 X 3 —4.5 cm; veins oblique to the nerves 6. U. rufescens 6. subchartaceous, 2 and intercalated Leaves long-acuminate, 5—9 x —4 cm; veins veins parallel U. to the nerves 7. javanica 1. Urnulariaovatifolia Hook. t. — Stapf, Ic. (1901) 2711 p. 3. Willughbeia ovatifolia Merr., J. As. Soc. Mai. 1 (1923) 29. BORNEO. SARAWAK. Haviland 2302, Kuching. Urnularia beccariana — beccarianus 2. (Pierre) Stapf, I.e. f. I—6, p. I—2. Ancylocladus Bull. — O. Ktze [Rev. Gen. I (1891) 412, nomen] exPierre, Soc. Linn. Paris II, 1 (1898) 98. beccariana & Willughbeia K. Schum. in E. P., Nat. Pfl. Fam. Nachtr. 2 (1900) 55. BORNEO. Beccari R. Sarawak. 3764, banks of Bintulu — Brunei. Sinclair 1031S, Sg. Belait. — East. Kostermans Mt. — S h. NBFD 21354, Berau, Njapa. a b a Singh 48431, Sandakan, mile 45 Labuk Rd.; Singh & Nordin NBFD 48484(a), Tawau Dist., mile 13 Apas Rd. Urnularia flavescens I.e. f. 2. — 3. (Hook . f.) Stapf, 7, p. Willughbeia flavescens Dyer ex Hook. Fl. Ind. — /, Brit. 3 (1882) 625. Ancylocladus flavescens O. Ktze, Rev. Gen. 1 (1891) 412. — Melodinus cymosus Ridl., J. Fed. Mai. St. Mus. 10 (1920) 146. Distribution. Malay Peninsula (Wellesley, Perak, Malacca, Singapore). Urnularia beccarii — 4. (Pierre) Markgr., nov. comb. Ancylocladus beccarii Pierre, Bull. Soc. Linn. Paris II, 1 (1898) 98. — Willughbeia beccarii K. Schum. in E. & P., Nat. Pfl. Nachtr. — Hook. — Fam. 2 (1900) 55. U. oblongifolia Stapf, Ic. (1901) t. 2711 p. 2. Willugh- As. beia stapfii Merr., J. Soc. Mai. 1 (1923) 29. SUMATRA. R. — P 1 b a Forbes Indragiri. Soepadmo 141, Pakanbaru, Tenajan a e m n g. 3232, Benting Teluk, Rawas R. BORNEO. Sarawak. Beccari For. Res. 2272, Matang. — Sab ah. SAN 17467, Andalau 5. Urnularia lanceolata Markgr., nov. sp. Frutex scandens glaber. Ramuli teretes lenticellosi. Folia coriacea, lanceolata, longiuscule X laterales — mm acuminata, 5 —8,5 1,8—3,5 cm; nervi 10—14 paria, 4 5 inter se distantes, obli- angulo 30° ascendentes, rete tertiariumhorizontale, tenue, versus nervos secundarios 8 quum; petiolus crassiusculus, —10 mm. Inflorescentiae axillares, thyrsoideae, 3x2 cm, pedunculus 1 cm longus 1 mm crassus, rachis binodis. Lobi calycis ovati, 1,2 mm longi. lobi Antherae Corollae tubus 3 mm longus, 2,5 X 1 mm. 0,7 mm. Ovarium conicum, 6 1,2 mm altum. Fructus globosus, cm. Semina ellipsoidea, applanata, 15 X 10 x 5 mm. S BORNEO.