ASCLEPIADEZ. LXVI. Sarcostemma. 
at top; exterior corona cup-shaped. b.G. Native of Arabia. 
Cynanchum pyrotéchnicum, Forsk. egypt. p. 53. no. 79. Lam. 
dict. 2. p. 236. Microloma pyrotéchnicum, Spreng. syst. 1, 
p. 855. Branches and stem green. Pedicels filiform, yellowish. 
Calyx campanulate, 5-cleft. Segments of corolla yellow above, 
green beneath and at the base, lanceolate, with reflexed edges. 
Follicles terete, curved, attenuated at the base. In Arabia the 
medulla of the plant is used as tinder. 
Tinder Sarcostemma. Shrub. 
7 S. strprra‘ceuM (Roem. et Schultes, syst. 6. p. 116.) leafless, 
branched, diffuse, articulated, rather mealy; umbels termin- 
ating the short opposite branches, or at the tops and sides of 
the main branches; outer corona membranous, cup-shaped, 
pentagonal; leaflets of inner corona thick, incurved, longer than 
the gynostegium. h. G. Native of Arabia Felix, at Yemen, 
in woods.  Asclépias stipitàcea, Forsk. arab. 50. no. 69. Lam. 
dict. 1. p. 285. Stems of an obscure blue colour; joints 3 
inches long.  Pedicels filiform, about 12 in an umbel. Calyx 
small, 5-parted. Corolla with green segments ; having reflexed 
edges, and a white corona. Follicles slender, flat on one side 
and convex on the other, 3 inches long. 
Stipitate Sarcostemma. Shrub 3 feet. 
8 S. Forskærra`num (Roem. et Schultes, l. c. p. 117.) 
leafless, twining, glabrous, green, articulated, branched ; co- 
rymbs or umbels twin, on short branches, forming corymbs at 
the joints of the stems. h. ^. S. Native of Arabia Felix, 
and in woods near mount Melhan.  Asclépias aphylla, Forsk. 
egypt. p. 5. no. 68. Lam. dict. 1. p. 285. Stems fleshy, 
green. Joints a span long. Peduncles twin, on short branches, 
and corymbose at the joints. Flowers pedicellate, white, 
crowded into a globose corymb. Corona as in Calótropis gi- 
gantéa, ex Forsk. Perhaps not distinct from S, vimindle. 
Forskeel’s Sarcostemma. Shrub cl. or tw. 
** ** Species natives of tropical America. | Umbels inter- 
petiolar. Those species contained in this section differ materially 
in habit from the other species ; and may probably form hereafter 
a distinct genus. 
9 S. Gtav’cum (H. B. et Kunth, nov. gen. amer. 3. p. 194. 
t. 229.) twining ; branches terete, and are as well as the peduncles 
and leaves glabrous ; leaves lanceolate, acuminated, acute at the 
base, glabrous beneath; calyx ciliated ; umbels interpetiolar, 
on long peduncles ; segments of corolla fringed, acute; outer 
corona undulated, annular, fleshy, 5-parted: lobes fringed; 
leaflets of the inner corona ovate-oblong, obtuse, fleshy, higher 
than the anthers. 2/.^. S. Native of La Guayra, Mayqueties, 
and Cabo Blanco, by the sea side. Cynanchum pedunculàre, 
Lam. dict. 2. p. 236. Leaves membranous, revolute, green above. 
Flowers size of those of Asclépias Syriaca, white. Gynoste- 
gium twice as longas the tube of the corolla. Pollen masses 
subclavate, yellow, angular at the base, and geniculately in- 
flexed. Stigma terminated by a subconical, 2-lobed point. 
Glaucous-leaved Sarcostemma. Shrub tw. 
10 S. rusE'scess (H. B. et Kunth, l. c. p. 195.) twining ; 
branches, peduncles, and calyxes clothed with silky down; 
leaves lanceolate, acuminated, rounded at the base, membra- 
nous, having the margins and middle nerves downy ; segments 
of corolla ciliated, downy outside, many-nerved ; outer corona 
narrow ; leaflets of inner corona ovate-oblong, obtuse, fleshy, 
flat, equal in height to the gynostegium, but three times shorter 
than the corolla, green. 2t. ^. S. Native along with S. glaá- 
cum. Flowers size of those of S. glaticum. Pollen masses 
linear-oblong, obtuse, the rest asin S. glaticum. Leaves nearly 
2 inches long and 4 an inch broad. Stigma terminated by a 
conical, 2-lobed point. 
Downy Sarcostemma. 
PI. tw. 
LXVII. PHILIBERTIA. 157 
11 S. Cumane’nse (H. B. et Kunth, ]. c.) twining ; branches 
and peduncles glabrous; leaves linear-lanceolate, acuminated, 
obtuse at the base, membranous, puberulous; calyxes downy; 
outer corona narrow, undulated ; segments of corolla ovate, 
acute ; leaflets of inner corona oblong, obtuse, fleshy ; gynos- 
tegium as in the preceding. %.? O.S. Native near Cumana, 
in sandy places. Leaves 2 inches long and 24-3 lines broad. 
Corolla white. 
Cumana Sarcostemma. PI. tw. 
12 S. Bréwnn (Meyer. prim. esseq. p. 139.) twining, gla- 
brous ; leaves lanceolate, acuminated, glabrous; umbels inter- 
petiolar; pedicels, calyxes, and corolla downy; segments of 
corolla ovate, bluntish, concave, glabrous inside ; outer corona 
an entire, narrow ring ; leaflets of inner corona ovate, bluntish, 
glabrous, a little higher than the gynostegium. h.? ^. S. 
Native of Carthagena, Jacq.; island of Arowabish, in hedges, 
ex Meyer. S. clatisum, Roem. et Schultes, syst. 6. p. 114. 
Cynánchum claüsum, Jacq. amer. 1. p. 87. t. 60. f. 2. ed. pict. 
t. B7. Asclépias viminàlis, Willd. spec. 1. p. 1270.?— Plum. 
icon. t. 27. f. 2.? Lower leaves larger and broadish ovate- 
oblong; the upper ones becoming gradually narrower, with 
revolute edges: painted with white on the nerves, and greenish 
blue on the veins, Calyx small. Pollen masses oblong, a little 
curved, hairy, hanging by short pedicels rising from blackish 
glands. Pedicels furnished with minute villous bracteas at the 
base. 
Browne's Sarcostemma. Shrub tw. 
13 S. Swarrzia‘num (Roem. et Schultes, syst. 6. p. 115.) 
twining, filiform, glabrous; leaves lanceolate, glabrous ; umbels 
interpetiolar, many-flowered; segments of corolla ovate, acute, 
concave, ciliated; outer corona? leaflets of inner corona sessile, 
ovate-conical. 5. ^. S. Native of the south of Jamaica, in 
sandy arid places, among bushes by the sides of rivulets. As- 
clépias viminàlis, Swartz, prod. p. 53. fl. ind. occ. 1. p. 539. 
Willd. spec. 1. p. 1270.?  Asclépias scandens, Mill.—Sloan. 
jam. 89. hist. 1. p. 207. t. 131. f. 1. Plum. icon. 27. f. 2. 
Pedicels naked. Corolla white. Follicles oblong, acuminated, 
compressed at the base, downy, hoary. 
Smartz's Sarcostemma. Clt. 1820. Shrub tw. 
14 S. LINEA`RE (Spreng. syst. 1. p. 853.) plant erectish, her- 
baceous ; leaves almost sessile, linear, glabrous ; umbels axil- 
lary, many-flowered. 2%.S. Native of Cumana, 
Linear-leaved Sarcostemma. PI. erect. 
Cult. For culture and propagation see Ceropégia, p. 112. 
LXVII. PHILIBE’RTIA (named after J. C. Philibert, who 
has written some works on elementary botany). H. B. et Kunth, 
nov. gen. amer. 3. p. 195. 
Lin. syst. — Pentándria, Digijnia. Corolla urceolately rotate, 
sinuately 5-lobed ; lobes acute, intersected by as many teeth. 
Corona double; outer one ring-formed, in the bottom of the 
corolla, entire, fleshy, undulated ; inner one inserted higher up 
with the tube of the filaments, 5-leaved: leaflets entire. Anthers 
terminated by a membrane ; pollen masses clavately cylindrical, 
fixed beneath their apexes, pendulous. Stigma biapiculated. 
Follicles unknown.—A twining shrub. Leaves opposite, cor- 
date, soft, tomentose. Umbels interpetiolar, involucrated.— 
"This genus is very nearly allied to Sarcostémma, from which 
it principally differs in the urceolate, sinuately 5-lobed corolla. 
1 P. soranoives (H. B. et Kunth, l. c. p. 196. t. 230.) 
bh. ©. S. Native on the banks of the river Amazon, near 
Tomependa. Leaves green above and hoary beneath, 1 inch 
and more long, 4-5 lines broad. Umbels 8-10-flowered, about 
equal in length to the leaves. — Corollas large, downy outside. 
Solanum-like Philibertia. Shrub tw. 
Cult, For culture and propagation see Perguldria, p. 133. 
