ASCLEPIADEZE. XLVIII. PeNrATROPIs. 
Govan’s Iphisia. Shrub or herb. ? 
Cult. For culture and propagation see Calótropis, p. 147. 
XLVIII. PENTA'TROPIS (from zevre, pente, five, and 
tporıc, tropis, a keel). R. Br. in Salt. trav. append. ex Wight 
and Arnott, contrib. ind. bot. p. 52.— Asclépias microphylla, 
Roxb. 
Lin. syst.  Pentándria, Digynia. Corolla rotate, 5-cleft. 
Stamineous corona 5-leaved; leaflets opposite the anthers, ad- 
nate vertically to the gynostegium, averse, loose or free at apex ; 
pollen masses ventricose, pendulous, fixed beneath their tops. 
Stigma mutic. Follicles smooth. Seeds comose.— T wining 
subshrubs. Leaves rather fleshy, flat. Umbels interpetiolar, 
few-flowered, almost sessile. Follicles obsoletely trigonal, flat- 
tish on one side. 
1 P. wricnoPruv'LLA (Wight and Arnott, l. c.) twining, gla- 
brous; leaves rather fleshy, ovate, mucronate, rounded at the base 
or subcordate; umbels almost sessile, few-flowered ; pedicels 
long-filiform ; calyx minute; corolla spreadingly reflexed ; 
segments acute; leaflets of corona broad, averse at the base, 
cuspidate and incurved at the apex, equal to the gynostegium. 
k. O.S. Native of Coromandel and Bengal, on argillaceous 
banks of rivers; particularly the river called Yamuna, in 
Bengal.  Asclépias microphylla, Roxb. fl. ind. 2. p. 35. 
Schultes, syst. 6. p. 85.  Asclep. tenuiflóra, Roxb. mus. ind. 
or. t. 610. Oxystélma caudàta, Ham. herb. Wall. ascl. no. 
110.—Asclep. alexiàca, Jacq. may be this plant, but the figure 
in Rheed. mal. 9. t. 13., to which he refers his plant, has no 
affinity with this. Roxburgh supposes that synonyme to be 
Tylóphora asthmática, but there are many obvious reasons 
against that affinity. 
Small-leaved Pentatropis. Shrub tw. 
2 P.cynancnoiprs (R. Br. in append. to Salt. trav.) h. 
^. G. Native of Abyssinia. We know nothing of this plant 
but the name. 
Cynanchum-like Pentatropis. Shrub tw. 
Cult. For culture and propagation see Oxypétalum, p. 148. 
XLIX. RAPHISTE'MMA (from papıc, raphis, a needle, 
and erzeupa, stemma, a crown; in reference to the narrow, elon- 
gated leaflets of the corona). Wall. pl. asiat. rar. 2. p. 40. t. 
163. Wight and Arn. contrib. ind. bot. p. 54.—Asclépias pul- 
chélla, Roxb. 
Lin. syst. — Pentándria, Digynia. Corolla campanulate ; 
limb 5-parted ; staminal corona 5-leaved: leaflets compressed, 
elongated. Anthers terminated by a membrane; pollen masses 
fixed beneath their apexes, pendulous. Stigma bluntly conical. 
Follicles solitary by abortion, somewhat ventricose. Seeds 
comose.—A glabrous twining shrub. Leaves largish, cordate. 
Flowers white, corymbose. Corona exserted, equal to the limb 
of the corolla. This genus, Dr. Wallich suggests, is very nearly 
allied to Kanahia, the difference appearing more in habit and 
country than any character afforded by the flower. 
1 R. Purcug LLvM (Wall. l. c. t. 163.). h.%.S. Native 
of Silhet, Gualpara, Tavoy, Pegu, near Rangoon. Asclépias 
pulchélla, Roxb. fl. ind. 2: p. 54. Pergulària? campanulata, 
Hamilt. herb. Flowers large. 
Neat Raphistemma. Shrub tw. 
Cult. For culture and propagation see Oxypetalum, p. 148. 
L. UROSTELMA (from ovpa, oura, a tail, and aredpa, 
stelma, a crown; in reference to the tails of the gynostegium). 
Bunge, in mem. acad. petersb. 2. p. 118. 
Lin. syst. — Pentándria, Digy'nia. Calyx 5-parted; with 
lanceolate, acute segments. Corolla campanulate, deeply 5- 
cleft ; segments villous inside, and at length revolute. Corona 
simple, shortly 5-lobed : lobes obtuse; gynostegium furnished 
‘VOL. IV. 
XLIX. RarHrisTEMMA. 
L. Urosrerma. LI. ANaNTHERIX. 145 
with 5 membranous processes, and each of these processes is 
furnished with a long filiform appendage, which is pentagonal at 
the base. Pollen masses twin, solid, pendulous.  Follicles 
muricated. Seeds comose.—A scandent or twining plant. 
Leaves cordate, waved, acuminated. Racemes axillary, pedun- 
culate. Flowers pale, dirty reddish white. 
1 U. Curne'nse (Bunge, l. c.) hk. ©. G. Native of China, 
China Urostelma. | Pl. tw. 
Cult. For culture and propagation see Oxypétalum, p. 148. 
LI. ANA'NTHERIX (from a, priv. and a»0epi£, antheria, 
an awn ; there are no horn-formed processes from the base of the 
leaflets of the corona, as in Asclépias), Nutt. gen. amer. 1. 
p. 169. and in amer. phil. soc. trans, 5. p. 201.—4Asclépias spe- 
cies of authors. 
Lin. syst. Pentandria, Digynia. Corolla subcampanulate, 
5-cleft. Corona simple, 5-lobed; lobes compressed, empty 
inside (not furnished with a horn-formed process, as in Asclé- 
pias), ineurved, furnished with a little segment inside, longer than 
the gynostegium, which is sometimes pedicellate. "The restas in 
Asclépias.—Erect, herbaceous plants. Leaves alternate or 
opposite, sometimes subverticillate, and the axils sometimes 
spinulose. Flowers large, umbellate, or panicled, terminal. 
Follicles muricated or smooth. This genus is very nearly allied 
to Calótropis, but differs essentially in the insertion of the 
corona, and in the form and character of its segments. 
Szcr. I. LzrisrE xu (from Aere, lepis, a scale; and ere, 
stelma, a crown; in reference to the scales inside the corona). 
Segments of corona furnished each with a little scale or seg- 
ment inside. Gynostegium sessile. Follicles usually muri- 
cated. 
1 A. víris (Nutt. gen. amer. 1. p. 169. amer. phil. soc. 
trans, 5. p. 201.) leaves opposite, sessile, obovate-oblong, mu- 
cronulate, smoothish ; umbels cauline, subpanicled, few-flow- 
ered; segments of corona very long. 2. H. Native of the 
Arkansas territory, in damp pine barrens, near St. Mary's; and 
Carolina. Asclépias viridis? Walt. fl. car. p. 107. — Ascl. con- 
nivens, Baldw. in Ell. sketch. p. 320. Podostigma viridis, Ell. 
sketch. 327. Gomphocarpus viridis, Spreng. syst. 1. p. 849. 
Corolla green. Corona purplish ; fructification white. 
Green-flowered Anantherix. FI. Aug. Sept. Clt. 
Pl. 4 to 1 foot. 
2 A. PANICULA' TUS (Nutt. in amer. phil. soc. trans. 5. p. 203.) 
leaves scattered, ovate-oblong, bluntish, mucronulate ; umbels 
divided, subpanicled ; corona one half shorter than the corolla; 
follicles muricated. 27. H. Native of the Arkansas territory, 
in cedar swamps, near Fort Smith ; and also near the Red 
river. Asclépias viridis, Walt. fl. carol. p. 137. Pursh, fl. 1. 
p.183. Stem angular. Leaves scabrous on the margins, 4-5 
inches long, and 1-14 broad. Umbels several, terminal. Co- 
rolla yellowish-green. Corona variegated with purple and white. 
Panicled-flowered Anantherix. Pl. 1 to 2 feet. 
3 A. pnEcU MaENs (Nutt. l. c.) leaves scattered, nearly oppo- 
site, ovate-lanceolate, very long, acute; umbels nearly globose, 
terminal; corona about equal in length to the corolla. %. H. 
Native of the Arkansas territory, on dry hills, near the con- 
fluence of the Kiamesha with the Red river. Stem rather an- 
gular, 1 to 14 inches long. Leaves scabrous on the edges, 
Umbels solitary. Peduncles downy. Corolla greenish, Co- 
rona brownish.  Follicles muricated. 
Decumbent Anantherix. | Pl. decumbent. 
1812. 
Secr. II. Sryza’npra (from orvXoc, stylos, a column, and 
avgp arópoc, aner andros, a male; in reference to the gynos- 
tegium being pedicellate). Nutt. in amer. phil. soc. trans. 5, 
p. 203. Segments of corona destitute of the little segment 
U 
