142 ASCLEPIADE Æ. 
cab. 1297.- Dill. elth. t. 30. f. 34. 
corola and corona bright orange; fructification yellow. 
bels disposed as if they were in a terminal corymb. 
Tuberous-rooted Swallow-wort. Fl. June, July. Clt. 1690. 
Pl. 1 to 2 feet. 
35 A. pxcu'MmBENs (Mill. dict. no. 10. Willd. spec. 1. p. 
1218.) stems decumbent, hairy ; leaves lanceolate, very hairy; 
umbels lateral. 2/. H. Native of Carolina, in barren fields. 
A. tuberósa, (2. decümbens, 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. 
decumbent. 
Flowers very showy ; 
Um- 
PI. 
t Species not sufficiently knomn. 
36 A. vAwiLLA (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. 
1. H. Native of Kentucky, on the banks of the green river. 
Flowers lilac, having the smell of Vanilla. 
Vanilla-scented Swallow-wort.  Pl.? 
37 A.? KrarnorHiA'NA (Roem. et Schultes, syst. 6. p. 82.) 
leaves opposite, oblong, acuminated, downy beneath ; umbels 
axillay, few-flowered. 2t. H. Native of North America, 
' Klaproth. A. acuminata, Willd. reliq. mss. ex Roem. et 
Schultes, l. c. 
Klaproth’s Swallow-wort. Pl. ? 
38 A.? nzPA'NDA (Gmel. syst. 1. p. 445. ex Schultes, 1. c.) 
leaves revolutely-repand, hairy. %. H. Native of? Leaves 
opposite, with revolute edges. 
Repand-leaved Swallow-wort. PI. 
39 A. Lu`rea (Rafin. journ. bot. 1. p. 229.) leaves petiolate, 
oblong, acute, narrowed at the base; umbels erect; petals pro- 
cumbent : horns furnished with a subulate appendage. 2. H. 
Native of Philadelphia. 
Yellow Swallow-wort. Pl. ? 
40 A.? marcarata‘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. ©.S. Native of Brazil. 
Pearl-flowered Swallow-wort. Pl. 
41 A.? rRUNCA'TA (Willd. enum. suppl. p. 13. Link. enum. 
l. p. 252.) leaves petiolate, opposite, cordate-oblong, acumin- 
ated, quite glabrous, whitish beneath. kh. S. Native country 
unknown. ‘The flowers of this plant have not been seen. 
Truncate Swallow-wort. Clt.? Shrub. 
+ + Plants referred to Asclópias by authors, but none of them 
evidently belong to the genus. Leaves of all opposite. 
42 A. mucrona‘ra (Thunb. prod. 1. p. 47. fl. cap. 2. p. 155.) 
stems erect, herbaceous, hairy; leaves oblong, obtuse, mucro- 
nate, glabrous; umbels axillary. %. 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. Pl. 1 foot. 
43 A. coNvOLYULA'CEA (Willds spec. 1. p. 1269.) stem twin- 
ing; leaves roundish-cordate, rather pilose as well as the 
stems: lobes distant; umbels compound.  p.^.S. Native of 
Guinea. Very like A. fe'tida. Common peduncles longer 
than the leaves, pilose. 
Convolvulus-like Swallow-wort. Shrub tw. 
44 A. FILIFÓRMIS (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. 
4Y. G. Native of the Cape of Good Hope, at Krum river. 
XLI. Ascrrpias. 
Margins of leaves revolute. Follicle solitary, elliptic. This 
and Cynanchum filiforme and Apocynum filiforme are probably 
one and the same plant. 
Filiform Swallow-wort. Pl. 1 to 2 feet. 
45 A. Graminea (Lam. dict. 1. p. 283.) stem branched ; 
leaves linear, grassy, glabrous, with revolute edges ; horns of 
corona erect, mucronate. 2f. 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. Pl. 1 to 2 feet. 
46 A. sPrRA' Lis (Forsk. egypt. 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. h.G. Native of Arabia Felix, on the road to Djalia 
and Meneira, among Pánicum dichótomum. Segments of calyx 
linear-lanceolate. Corolla spreading, with greenish yellow 
segments, and white corona. Stigma operculate.  Follicles 
edible. Shrub not milky. 
Spiral-petalled Swallow-wort. Shrub. 
47 A.cawE'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. 
4%. H. Native of Cappadocia and Galatia. Asclépias orien- 
talis, flore viridi, Tourn. cor. 2.— Buxb. cent. 3. p. 17. t. 30. 
Flowers green. 
Canescent Swallow-wort. Pl. procumbent. 
48 A. rARVIFLORA (Humb. et Bonpl. in Willd. rel. mss. ex 
Schultes, syst. 6. p. 82.) stems scandent ; branches fascicled ; 
leaves elliptic; flowers solitary, terminal. $^. ^. S. Native 
of South America. 
Small-flowered Swallow-wort. Shrub tw. 
49 A. ciustmro1ia (Horsfield, in Willd. rel. mss. ex Schultes, 
syst. 6. p. 82.) leaves obovate, fleshy : umbels axillary ; stems 
twining. h.™.S. Native of Java. 
Clusia-leaved Swallow-wort. Shrub tw. 
50 A. rrnRUGÍNEA (Humb. et Bonpl. in Willd. rel. mss. ex 
Schultes, syst. 6. p. 83.) clothed with rusty hairs; leaves ovate- 
cordate ; stems twining; umbels axillary. kh. ^. S. Native 
of Caraccas, 
Rusty Swallow-wort. Shrub tw. 
51 A. Fonska?' rn (Schultes, syst. 6. p. 85.) twining; corolla 
campanulate, green, twisted; petals linear. 2t. H. Native of 
Arabia Felix, at Lohaja. A. nívea, Forsk. egypt. 51. no. 73. 
A. nivalis, Gmel. syst. p. 444. 
Forskeel’s Swallow-wort. | Pl. tw. 
52 A. MAcnoPHYLLA (Humb. et Bonpl. in Willd. rel. mss. 
ex Schultes, syst. 6. p. 86.) stems twining ; leaves elliptic-cor- 
date, acute; umbels nearly sessile. p. ^ Native at Cu- 
mana. 
Long-leaved Swallow-wort. Shrub tw. 
53 A. cynancuoipes (Humb. et Bonpl. l. c.) leaves oblong- 
lanceolate, acute, glabrous; umbels terminal. h.™.S. Na- 
tive of Caraccas. 
Cynanchum-like Swallow-wort. Shrub tw. 
54 A. mastara (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. 2/.^.G. Native of China, on the mountains 
of Zui-wey-scan. Flowers white, sweet-scented. Perhaps a 
species of De‘mia. ? 
Hastate-leaved Swallow-wort. Pl. tw. 
Cult. Asclépias 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, 
