7 
12. DALEA L. 
Glandular-punctate herbs or shrubs, with odd-pinnate (rarely-pal- 
mate) leaves, small entire leaflets, flowers in terminal pedunculate 
spikes, 9 or 10 monadelphous stamens, the cleft tube of filaments bear- 
ing 4 of the petals about its middle (the cordate standard being free), 
and an ovate flat usually indehiscent 1 or 2-seeded pod included in the 
calyx. 
* Calyx very villous, with setaceous or subulate teeth. 
+ Low glabrous shrubs: spikes few-flowered. 
1, D. formosa Torr. Much branched: leaflets about 5 pairs, very small, about 
4mm. long, thick and very narrow, cuneate-oblong, retuse: spikes loose, 6 to 10-flow- 
ered, on short peduncles; bracts ovate, shorter than the flower, silky-villous on the 
margin: calyx-teeth subulate, plumose: corolla large and showy, bright-purple.— 
From Eagle Pass and the upper Colorado to New Mexico. 
+ + Glabrous herbs : spikes many-flowered. 
+ Leaflets 5 or 6 pairs: perennials, with concave scarious-margined very smooth and persist- 
ent bracts. 
2. D. laxiflora Pursh. Stem tall, 9 to 12 dm. high, erect, branched above: leaflets 
linear-oblong, 4 to 6 mm, long: spikes panicled, interrupted, with distant white 
flowers; bracts very broad, almost orbicular, coriaceous, black glandular, embracing 
the flower: calyx with long setaceous plumose teeth: stamens 9.—A species of the 
western plains and reported from central Texas as far south as the San Antonio. 
3. D. pogonathera Gray. Low, with depressed stems: leaflets oblong-linear: 
spikes oblong, Jensely-flowered, about 2.5 cm. long; bracts ovate, mucronate-acumi- . 
nate, not so coriaceous or glandular as in the last: calyx with long setaceous plumose 
teeth, longer than the tube: petals purple: stamens 10.—Throughout Texas south of 
the Colorado and west to New Mexico. 
4. D. lasiathera Gray. Stouter and larger in all parts than the last, the stems from 
15 to 30 cm. high: leaflets oblong-linear: spikes cylindrical, densely-flowered, be- 
coming 5 to 7.5 em. long; bracts orbicular-ovate, cuspidate-acuminate: calyx-teeth 
subulate, shorter than the tube, thickly villous with shorter and rather appressed 
hairs: corolla showy, considerably larger and purple-red: stamens 10.—Common 
on the prairies south of the Colorado and west to New Mexico. 
++ ++ Leaves with many pairs of leaflets: annuals with slender elongated dense spikes. 
5. D, alopecuroides Willd. Erect and much branched, 3 to 6 dm. high: leaflets 
10 to 20 pairs, linear-oblong: flowers light rose-color or whitish, in cylindrical spikes: 
bracts ovate-lanceolate, acuminate, deciduous: calyx with long slender teeth.—Al- 
luvial soils, common in the Mississippi Valley States, but reported from Texas only 
west of the Pecos. 
~~ + + Herbaceous or shrubby, pubescent, tomentose, or sericeous, 
++ Spikes very dense, thick, and very villous. 
= Leaflets appressed-sericeous, 2 to 4 pairs, rarely pinnately 3-foliolate. 
6. D. aurea Nutt. Stem about 6 dm. high, pubescent, virgate and erect: leaf- 
lets oblong-obovate and linear-oblong, more or less silky pubescent, 8 to 12 mm. long: 
flowers yellow, in thick oblong very compact long-peduncled spikes; bracts rhom- 
bic ovate, as long as the calyx: calyx-teeth subulate, broad at base, plumose.—In 
dry ground, apparently common throughout Texas, especially in the mountains west 
of the Pecos. 
7. D. nana Torr. Like the last, but low, 10 to 15 cm. high, diffusely spreading 
and repeatedly branched, leafy to the spikes: leaflets oblong or obovate: spikes 
smaller, much less dense, on very short peduncles: flowers and bracts as in the last.— 
Throughout southern and western Texas. 
