CATALOGUE. 187 
MACROSIPHONIA* BRACHYSIPHON, Gray. (Echites brachysiphon, Torr. Bot. 
Mex. Bound. 158, 43.)—Low, branching from a woody base; branches 
puberulent; leaves opposite, entire. or wavy, lanceolate to oval, usually 
acute ; flowers yellowish-white, 14-2’ long; throat somewhat exceeding the 
eyliodeibal tube, 13’ across the expanded oval lobes; follicles (mature) 
3-6’ long, 2-3” wide, puberulent ; coma rusty-brown, exceeding the seed.— 
Limestone soils, Southern Arizona, at 5-6,000 feet altitude (646, 497). 
-ASCLEPIADEZ. 
By Dr. GEorRGE ENGELMANN. 
PHILIBERTIAt CYNANCHOIDES, Gray, Proc. Amer Acad. 12, 95. Synops. 
87. (Sarcostemma cynanchoides, Decaisne in DC. Prod. 8, 541. S. bilobum, 
Torr. Bot. Mex. Bound. 160.)—Tall, climbing, glabrous or glabrate ; leaves 
from deeply cordate to sagittate or hastate, abruptly cuspidate or short- 
acuminate, 1-24’ long; peduncle 15-25-flowered; slender pedicels much 
longer than the flowers; corolla whitish, nearly half an inch wide; lobes 
acutish, somewhat ciliate, crowns separated by a very short column.— 
Cienega, near Tueson, Ariz. (566), Rothrock, 1874, and to Western Texas. 
PHILIBERTIA LINEARIS, var. HETEROPHYLLA, Gray, ib. (Sarcostemma hetero- 
phyllum, Engelm Bot. Mex. Bound. 161.)—Glabrous or upward pubescent ; 
leaves 1-2’ long, 1-2” wide, some tapering into a petiole, some with a 
rounded, others with a dilated or auriculate-cordate base; corolla 6’ 
wide, yellowish, purplish, or whitish, lobes ovate, crowns contiguous.— 
*Macrosipnonta, Muell. (Arg.).—Calyx fenire! nee cages _— glands inside the base; lobes 
narrow. Tube of the corolla long, cylindrical ; th ies ger 
than the tube; no = Corolla-iobes 5, “broad, say eiseL Stamens attached to the highest part 
of the tube, anthe and attached to it by a little below the middle ; anther- 
cells produced into blunt appendages below. Scales of the disk 5, of which 3 are free and 2 united. 
Follicles straight, terete, continuous or sub-torulose. Seeds oblong, crowned with a long (and at length 
deciduous) coma. Albumen thickish; cotyledons oblong; radicle short.—Undershrubs, erect, simple or 
branched. Leaves opposite or whietled, ith the margin often undulate-crisped. Flowers in a terminal 
raceme or at length pseudo-axillary, few or solitary, on very short pedicels, white, yellow, or scarlet.— 
BENTHAM & HOOKER. 
‘tPHILIBERTIA, H. B, K.—Corolla rotate, deeply 5-parted ; crown double, the exterior or membra- 
naceous ring adnate to the base of the corolla, the interior of 5 (in ours tumid, hoodlike) scales —— 
to the base of the very short column; pollinia ee ae follicles smooth, acuminate.—Perennial, 
or less twining herbs.—(Sarcostemma, H. B. K. Bot. Mex. Bound, etc., not R. Br.)—Bentu. & Hox. 
Gen. 2,750. Gray, Proc. Amer. Acad. 12, 95. 
* 
