162 



ASCLEPIADE^E. LXXIX. STREPTOCAULON. LXXX. DECALENS. LXXXI. FINLAYSONIA. 



2 S. KLEINII (Wight, and Arnott, 1. c. p. 65.) branches 

 downy ; leaves almost sessile, cuneate-oblong or obovate, mu- 

 cronate, cordate at the base, rather hispid above, but clothed 

 with soft, white tomentum beneath ; cymes diffuse, shorter than 

 the leaves ; calyxes and pedicels densely downy. Fj . ^. S. 

 Native of the Peninsula of India, but the locality is not men- 

 tioned. Wight, cat. 1564. Wall, ascl no. 157, unnamed. 



Klein's Streptocaulon. Shrub twining. 



3 S. WALLICHII (Wight, 1. c.) branches pubescent; leaves el- 

 liptic, attenuated at the base and apex, cuspidate, clothed with 

 soft down above, and fuscous, velvety down beneath ; cymes 

 diffuse and branched, many-flowered, longer than the leaves : 

 having the ultimate branches raceme-formed ; pedicels filiform, 

 and are, as well as the calyxes, glabrous, P? . r ^. S. Native of 

 Penang and Singapore. Wall. ascl. no. 124, unnamed. 



Wallich's Streptocaulon. Shrufc twining. 



4 S. EXTE'NSUM (Wight, I.e.) glabrous; leaves oval, acumi- 

 nated ; cymes panicle-formed, much longer than the leaves ; 

 flowers scattered, pedicellate ; pedicels filiform, glabrous. Pj . 

 / *\ S. Native of Rangoon and Tavoy. Periploca extensa, 

 Wall. ascl. no. 128. 



Extended Streptocaulon. Shrub twining. 



5 S. SYLVE'STRE (Wight, 1. c.) procumbent, or twining a little ; 

 stems rather villous ; leaves almost sessile, roundish-ovate, cus- 

 pidate, cordate at the base, rather velvety on both surfaces, but 

 most so beneath ; cymes few-flowered, shorter than the leaves ; 

 pedicels and calyxes pubescent. Tj . r ^. S. Native of the East 

 Indies, at Sanastrygota. Periploca ? sylvestris, Ham, herb. no. 

 763. Wall. ascl. no. 140. 



Wild Streptocaulon. Shrub twining. 



6 S. CALOPHY'LLUM (Wight, 1. c.) glabrous ; leaves narrow- 

 lanceolate, long attenuated, transversely-veined, with sub-undu- 

 lated edges ; cymes almost sessile, few-flowered ; flowers on 

 short pedicels ; follicles slender, apiculated, about 6 inches long. 

 Tj . ^\ S. Native of Nipaul. Periploca ? Wall, asclep. no. 

 123. This plant differs in habit from the other species, but the 

 structure of the flowers is quite the same. 



Beautiful-leaved Streptocaulon. Shrub twining. 



j- Species not sufficiently known. 



7 S. MAURITIA'NUM ; glabrous ; leaves ovate, long-acumi- 

 nated, transversely veined, on short petioles ; racemes axillary, 

 composed of short divaricate branches ; pedicels furnished with 

 short, obtuse scales at the base ; follicles sub-articulated, sub- 

 ulate. 1? . ^\ S. Native of the Mauritius ; and of the East 

 Indies. Periploca Mauritiana, Poir. encyc. 5. p. 188. Cynan- 

 chum Mauritianum, Lam. diet. 2. p. 236. Funispapius, Rumph. 

 amb. 5. p. 14. t. 10, and perhaps t. 11. Leaves like those of 

 P. Grae'ca ; but the flowers are much smaller, and disposed in 

 short racemes. 



Mauritian Streptocaulon. Shrub twining. 



8 S. A'LBICANS ; glabrous ; leaves ovate, sub-acuminated, 

 small, on short petioles ; cyrnes few-flowered ; stems corky, 

 white ; tube of corolla hardly the length of the calycine teeth ; 

 segments oblong, nearly subulate, acute. % . ' Si Native of 

 the East Indies. Periploca albicans, Poir. encyc. 5. p. 191. 

 Leaves myrtle-formed. Flowers small, cream-coloured, nearly 

 sessile, on the branches of the common peduncle. 



Whitish Streptocaulon. Shrub twining. 



9 S. PARVIFLORUM ; glabrous : leaves small, ovate, obtuse, 

 mucronate ; flowers small, twin or tern, almost sessile, on the 

 tops of short, axillary peduncles ; stems filiform, very tough. 



*2 . r *. S. Native of the East Indies. Periploca parviflora, 

 Poir. encycl. suppl. 5. p. 192. Leaves approximate. Flowers 

 whitish. 



Small-flowered Streptocaulon. Shrub twining. 

 12 



10 S. VIROA'TUM ; glabrous ; leaves lanceolate, obtuse; stems 

 twiggy, furnished with many lateral branches, which bear the 

 flowers along their tops, in small fascicles, disposed in the man- 

 ner of a spike ; flowers small. \i . ^. S. Native of the East 

 Indies. Periploca virgata, Poir. suppl. 5. p. 192. Leaves 

 small. Flowers white. 



Twiggy Streptocaulon. Shrub twining. 



11 S. ? COCHINCHINE'NSIS ; arboreous; leaves fleshy, cordate- 

 oblong, large, glabrous ; racemes short, terminal. ^ G. Na- 

 tive of Cochinchina. Periploca Cochinchinensis, Lour. coch. 

 167. Wood flaccid. Branches spreading. Flowers pale blue. 

 Segments of calyx lanceolate, expanded. Nectary girding the 



fjnitals, of 5 erect, filiform leaflets, which are curved at the base, 

 ollicles 2, oblong. Seeds numerous, roundish. 

 Cochinchina Streptocaulon. Tree. 



12 S. ? CHINE'NSIS ; twining; leaves ovate-oblong, obtuse, 

 glabrous; peduncles many-flowered; segments of corollaglabrous, 

 linear, elongated, twisted. Fj . *"\ {} Native of China. Pergu- 

 laria Sinensis, Lour. coch. p. 169. Periploca Chinensis, Spreng. 

 syst. 1 . p. 836. Corolla yellow. Corona of 5 arrow-shaped 

 stipitate leaflets ; stigma conical, 5-furrowed ; follicles oblong ; 

 seeds naked. 



China Streptocaulon. Shrub twining. 



13 S. DIVARICA'TA ; shrubby, erect; branches short ; leaves 

 oblong-lanceolate, undulated ; peduncles terminal, 2-flowered, 

 divaricate ; segments of corolla subulate, elongated. Tj . G. 

 Native of China. Pergularia divaricata, Lour. coch. p. 169. 

 Periploca divaricata, Spreng. syst. 1. p. 836. Flowers yellow, 

 suffused with red. Corolla somewhat salver-shaped ; furnished 

 with 5 arrow-shaped scales at the mouth of the tube. Follicles 

 oblong ; seeds naked. 



Divaricate-panided Streptocaulon. Shrub. 



Cult. For culture and propagation see Pergularia, p. 133. 



LXXX. DECA'LEPIS (from citica, deka, ten ; and \cvic, 

 lepis, a scale; there are 10 scales, 5 in the throat, and 5 in the 

 tube of the corolla.) Wight, and Arnott, contrib. ind. bot. p. 64. 



LIN. SYST. Pentandria, Digynia. Corolla sub-rotate, 5- 

 parted ; throat crowned by 5 oblong-oval, flat, mutic scales, 

 alternating with the segments ; tube furnished with 5 linear- 

 obtuse scales, opposite the segments. Filaments distinct, in- 

 serted in the upper part of the throat, along with the 5 upper 

 scales, and cohering with them to the middle. Anthers glued 

 by the base to the margin of the stigma, distinct at top, beard- 

 less, terminated b y a sub-dilated appendage. Pollen masses 

 granular, solitary (probably composed of 4 confluent ones), ap- 

 plied to the dilated, loose appendage of each corpuscle. Stigma 

 mutic. A twining, ? smoothish shrub. Leaves opposite, oval, 

 bluntly acuminated. Cymes small, on longish peduncles, and 

 shorter than the leaves, composed of raceme-formed branches. 

 Flowers small. Limb of corolla villous inside. 



1 D. HAMILTONII (Wight, and Arnott, 1. c.) *? . ^. ? S. 

 Native of the East Indies, but the locality is unknown. Wight, 

 cat. no. 1566. Streptocaulon Hamilton!]', Wight, mss. Apo- 

 cynum, reticulatum, Herb. madr. Wall. ascl. no. 139. This 

 plant belongs to the Madras herbarium, and not to Hamilton's, 

 as Dr. Wight supposed, when he suggested the specific name. 



Hamilton's Decalepis. Shrub twining. ? 



Cult. For culture and propagation see Pergularia, p. 133. 



LXXXI. FINLAYSO'NIA (named in memory of the late 

 Dr. Finlayson, a surgeon in the service of the East India Com- 

 pany ; who made many collections of objects of natural history 

 during his residence in the East Indies.) Wall. pi. rar. asiat. 2. 

 p. 48. t. 162. Wight, and Arnott, contrib. ind. bot. p. 65. 



LIN. SYST. Pentandria, Digynia. Corolla rotate ; throat 



