316 
red to rose-color or sulphur-yellow: calyx equally colored: corolla (2.5 cm. ot se 
long) rather slender; the lobes of the lip ovate.—Stony or fertile mountain prairies, 
southern and western Texas. 
= = Lip of corolla with longer and narrow lobes, and base less saccate. 
6. C. purpurea Don. Minutely cinereous-ptbescent: leaves narrowly linear and 
entire, or mostly once or twice 3-cleft or laciniate, with divisions and lobes all nar- 
rowly linear: bracts similar or with cuneate-dilated base; the broader lobes of the 
upper and the calyx magenta-color or purple.—Hilly prairies of eastern Texas. 
+ + Calyx deeper cleft before than behind: bracts and calyx (if colored at all) yellowish. 
7. C. sessiliflora Pursh. Very leafy, cinereous-pubescent: leaves mostly 3 to 5- 
cleft, with narrow diverging sometimes cleft lobes; the floral similar or broader, 
not at all colored: the narrow calyx-lobes deeply 2-cleft: corolla 5 cm.long, the 
short galea but twice as long as the slender-lobed lip.—Prairies of western Texas. 
21. CORDYLANTHUS Nutt. 
Branching annuals, with alternate, narrow leaves, dull-colored flow- 
ers in small terminal clusters or more scattered, uncolored bracts and 
alyx, Spathaceous 2-leaved calyx, tubular corolla with lips commonly of 
equal length, 4 stamens with the small anther-cell sometimes wanting, 
anther-cells either ciliate or minutely bearded at base and apex, and 
style hooked at tip. 
1, C. Wrightii Gray, Loosely branched, almost glabrous, or above puberulent- 
scabrous, 3 to6 dm. high: leaves setaceous-filiform, 3 to 5-parted; floral similar, 
the tips not dilated: flowers several in the mostly dense terminal heads: corolla 
purplish, 2.5 em. long, with rather long lips: anthers villous.—Southwestern bor- 
ders of Texas. 
OROBANCHACEA, (BROOM-RAPE FAMILY.) 
Low thick or fleshy herbs destitute of green foliage (root-parasites, 
and bearing scales in place of leaves), gamopetalous, didynamous, the 
ovary 1-celled with 2 or 4 parietal placentw, a very many-seeded pod, 
and minute seeds, 
1. APHYLLON Mitchell. (NAKED BROOM-RAPE.) 
Brownish or whitish plants, with the purplish or yellowish perfect 
flowers and naked scapes minutely glandular-pubescent, 5-cleft regular 
valyx, somewhat 2-lipped corolla (upper more or less spreading and 
2-lobed, lower spreading and 3-lobed), included stamens, broadly 2-lipped 
or crateriform stigma, and pod with 4 placente. 
* Flowers solitary on long naked scapes or peduncles, without bractlets: corolla withalong 
curved tube and spreading 5-lobed limb. 
1. A. uniflorum Gray. Stem subterranean or nearly so, very short, scaly, often 
branched, each branch sending up 1 to 3 slender 1-flowered scapes 7.5 to 12.5 em. 
high: divisions of calyx lance-awl-shaped, half as long as corolla, which is 2.5 em. 
long, with 2 yellow bearded folds in throat and obovate lobes.—Damp woodlands. 
** Caulescent: flowers densely spicate, with 1 or 2 bractlets at base of calyx: corolla 
2-lipped, upper lip less or not at all 2-cleft. 
2. A. Ludovicianum Gray. Glandular-pubescent, branched, 7.5 to 80 cm. high: 
corolla somewhat curved, twice as long as the narrow lanceolate calyx-lobes; the lips 
