142 



ASCLEPIADE^:. XLI. ASCLEPIAS. 



cab. 1297.- Dill. elth. t. 30. f. 34. Flowers very showy ; 

 corolla and corona bright orange ; fructification yellow. Um- 

 bels disposed as if they were in a terminal corymb. 



Tuberous-rooted Swallow-wort. Fl. June, July. Clt. 1690. 

 PI. 1 to 2 feet. 



35 A. DECU'MBENS (Mill. diet. no. 10. Willd. spec. 1. p. 

 1218.) stems decumbent, hairy ; leaves lanceolate, very hairy; 

 umbels lateral. I/ . H. Native of Carolina, in barren fields. 

 A. tuberosa, ft. decumbens, Pursh, 1. p. 184. Flowers showy ; 

 having the petals and nectaries bright orange-coloured ; and 

 the fructification yellow. " Leaves ovate, obtuse, almost sessile, 

 villous; stem decumbent, hairy." Gron. virg. 27. 



Decumbent Swallow-wort. Fl. July, Aug. Clt. 1731. PI. 

 decumbent. 



t Species not sufficiently known. 



36 A. VANILLA (Rafin. in amer. month, journ. 4. nov. 1818. p. 

 39.) stem simple, downy at top ; leaves opposite, lanceolate, 

 downy at the base, glabrous, ciliated ; umbels axillary, erect. 

 y.. H. Native of Kentucky, on the banks of the green river. 

 Flowers lilac, having the smell of Vanilla. 



fam^a-scented Swallow-wort. PI. ? 



37 A. ? KLAPROTHIA'NA (Rcem. et Schultes, syst. 6. p. 82.) 

 leaves opposite, oblong, acuminated, downy beneath ; umbels 

 axillary, few-flowered. 1(1. H. Native of North America, 

 Klaproth. A. acuminata, Willd. reliq. tnss. ex Roam, et 

 Schultes, 1. c. 



Klaproth's Swallow-wort. PI. ? 



38 A. ? REPA'NDA (Gmel. syst. 1. p. 445. ex Schultes, 1. c.) 

 leaves revolutely-repand, hairy. Tf. . H. Native of ? Leaves 

 opposite, with revolute edges. 



Jtepand-leaved Swallow-wort. PI. 



39 A. LU'TEA (Rafin. journ. hot. 1. p. 229.) leaves petiolate, 

 oblong, acute, narrowed at the base ; umbels erect ; petals pro- 

 cumbent : horns furnished with a subulate appendage. If.. H. 

 Native of Philadelphia. 



Yellow Swallow-wort. PI. ? 



40 A.? MARGARATA'CEA (HofFmansegg in Willd. reliq. mss. 

 ex Schultes, syst. 6. p. 86.) leaves oblong-lanceolate, acuminated 

 at both ends, glabrous ; stem simple ; umbels erect, lateral, 

 solitary. Q.S. Native of Brazil. 



Pearl-Qowered Swallow-wort. PI. 



41 A. ? TRUNCA'TA (Willd. enutn. suppl. p. 13. Link. enum. 

 1. p. 252.) leaves petiolate, opposite, cordate-oblong, acumin- 

 ated, quite glabrous, whitish beneath. J? . S. Native country 

 unknown. The flowers of this plant have not been seen. 



Truncate Swallow-wort. Clt. ? Shrub. 



f f Plants referred to Asclepias by authors, but none of them 

 evidently belong to the genus. Leaves of all opposite. 



42 A. MUCRONA ( TA (Thunb. prod. 1. p. 47. fl. cap. 2. p. 155.) 

 stems erect, herbaceous, hairy ; leaves oblong, obtuse, mucro- 

 nate, glabrous ; umbels axillary. Tf. . G. Native of the Cape 

 of Good Hope, beyond Kamton's river, and near Krum river. 

 Peduncles shorter than the leaves ; pedicels downy. 



Mucronate-leaved Swallow-wort. PI. 1 foot. 



43 A. CONVOLVULA'CEA (Willd. spec. 1 . p. 1269.) stem twin- 

 ing ; leaves roundish-cordate, rather pilose as well as the 

 stems : lobes distant ; umbels compound. lj . ^. S. Native of 

 Guinea. Very like A. fcetida. Common peduncles longer 

 than the leaves, pilose. 



Convolvulus-like Swallow- wort. Shrub tw. 



44 A. FILIFORMIS (Lin. suppl. 169. Thunb. prod. 1. p. 47. 

 fl. cap. 2. p. 154.) stem erect ; leaves filiform, glabrous; umbels 

 lateral, on long peduncles, 5-6-flowered, length of leaves. 

 I/. G. Native of the Cape of Good Hope, at Krum river. 



Margins of leaves revolute. Follicle solitary, elliptic. This 

 and Cynanchum filiforme and Apocynum fliforme are probably 

 one and the same plant. 



Filiform. Swallow-wort. PI. 1 to 2 feet. 



45 A. GRAMINEA (Lam. diet. 1. p. 283.) stem branched; 

 leaves linear, grassy, glabrous, with revolute edges ; horns of 

 corona erect, mucronate. It- S. Native of the East Indies. 

 Stem rather angular. Leaves an inch long. Corolla white, 

 with undulated edges. Calyx villous outside. 



Grassy-leaved Swallow-wort. PI. 1 to 2 feet. 



46 A. SPIRA'LIS (Forsk. aegypt. p. 49. no. 66.) stem shrubby ; 

 leaves petiolate, oval-oblong ; flowers solitary, axillary ; petals 

 linear, spiral, hairy inside ; corona of 5 ovate, erect leaflets, 

 white, f? . G. Native of Arabia Felix, on the road to Djalia 

 and Meneira, among Pdnicum dichotomum. Segments of calyx 

 linear-lanceolate. Corolla spreading, with greenish yellow 

 segments, and white corona. Stigma operculate. Follicles 

 edible. Shrub not milky. 



Spiral-jyetatted Swallow-wort. Shrub. 



47 A. CANE'SCENS (Willd. nov. act. am. nat. cur. 3. p. 418.) 

 stems ascending at top, but procumbent at the base, downy ; 

 leaves ovate, veiny, acute, downy ; umbels few-flowered, axil- 

 lary, on short peduncles ; follicles ovate, acuminated, downy. 

 Tf. . H. Native of Cappadocia and Galatia. Asclepias orien- 

 talis, flore viridi, Tourn. cor. 2. Buxb. cent. 3. p. 17. t. 30. 

 Flowers green. 



Canescent Swallow-wort. PI. procumbent. 



48 A. PARVIFLORA (Humb. et Bonpl. in Willd. rel. mss. ex 

 Schultes, syst. 6. p. 82.) stems scandent ; branches fascicled ; 

 leaves elliptic ; flowers solitary, terminal. Tj . / ~ > . S. Native 

 of South America. 



Smatt-floivered Swallow-wort. Shrub tw. 



49 A. CLUSIJEFOLIA (Horsfield, in Willd. rel. mss. ex Schultes, 

 syst. 6. p. 82.) leaves obovate, fleshy : umbels axillary ; stems 

 twining. Jj . '"\ S. Native of Java. 



C ' lusia-leaved Swallow-wort. Shrub tw. 



50 A. FERRUGINEA (Humb. et Bonpl. in Willd. rel. mss. ex 

 Schultes, syst. 6. p. 83.) clothed with rusty hairs ; leaves ovate- 

 cordate ; stems twining ; umbels axillary. Jj . r *. S. Native 

 of Caraccas, 



Rusty Swallow-wort. Shrub tw. 



51 A. FORSKCE'LII (Schultes, syst. 6. p. 85.) twining ; corolla 

 campanulate, green, twisted ; petals linear. 7. H. Native of 

 Arabia Felix, at Lohaja. A. nivea, Forsk. segypt. 51. no. 73. 

 A. nivalis, Gmel. syst. p. 444. 



ForskceVs Swallow-wort. PI. tw. 



52 A. MACROPHY'LLA (Humb. et Bonpl. in Willd. rel. mss. 

 ex Schultes, syst. 6. p. 86.) stems twining; leaves elliptic-cor- 

 date, acute ; umbels nearly sessile. I? . r ^. S. Native at Cu- 

 mana. 



Long-leaved Swallow-wort. Shrub tw. 



53 A. CYNANCHOIDES (Humb. et Bonpl. 1. c.) leaves oblong- 

 lanceolate, acute, glabrous ; umbels terminal. Pj . ^. S. Na- 

 tive of Caraccas. 



Cynanchum-like Swallow-wort. Shrub tw. 



54 A. HASTA'TA (Bunge, in mem. acad. petersb. 2. p. 117.) 

 stems twining, glabrous ; leaves opposite, petiolate, hastately 

 cordate, acuminated, rather hispid above, and smoothish be- 

 neath, the basilar lobes rounded : umbels axillary, pedunculate, 

 many-flowered. I/ . ^. G. Native of China, on the mountains 

 of Zui-wey-scan. Flowers white, sweet-scented. Perhaps a 

 species of Dcemia. ? 



Hastate-leaved Swallow-wort. PI. tw. 



Cult. Asclepias is a genus of extremely handsome border 

 flowers. They thrive best in peat earth, or light rich soil: 

 they are generally increased by dividing at the root in spring, 



