325 
** Cinereous-pubescent : flowers small, in the axils of ordinary leaves and in slender spikes 
terminating the branches. 
4. D. parvifolia Gray. Much branched from a somewhat woody base, erect or 
diffuse: leaves ovate, 6 to 16 mm. long, petioled; upper axils floriferous: flowering 
branches mostly extended into slender sparsely-flowered spikes: corolla white or 
purple, 8 mm. long, (Shaueria parvifolia Torr, Mex. Bound, )—Dry soil, southern and 
western Texas. 
11. GATESIA Gray. 
Perennial herb, with bright green membranaceous petioled leaves, 
white or flesh-colored flowers in oblong mostly short-peduncled spikes, 
deeply 5-parted calyx, corolla with slender tube and almost equally 
4-lobed spreading limb, and 2 stamens with oblong contiguous and sim- 
ilar anther-cells, but one a little lower and oblique. 
1. G. lete-virens Gray. Puberulent or almost glabrous: stem when dry with a 
contracted ring above each node, as if articulated: leaves ovate-lanceolate or oval 
and acuminate at both ends, 6.5 to 12.5 cm. long: spikes somewhat strobilaceous, 
both terminal and axillary; bracts hirsute-ciliate; bractlets similar but smaller: 
stipe-like base shorter than the body of the 4-seeded pod.—In the Gulf States, and 
reported from ‘eastern Texas” (Wright). 
‘2. TETRAMERIUM Nees, 
Low perennial herbs, with oblong or ovate petioled leaves, dense spike 
of white or purplish flowers terminating stem and branches (its 4-ranked 
bracts imbricated and little exceeded by the corollas), small dry 4 or 
5-parted calyx, corolla with an almost equally 4-parted limb, 2 stamens, 
anther-cells equal and parallel or nearly so (either contiguous or sepa- 
rated by a slightly dilated connective), and placente at length separat- 
ing and diverging or incurving. 
1. T. hispidum Nees. Hirsute-pubescent, and the ovate or oblong strongly 3 to 
5-nerved spinulose-pointed bracts hispid: leaves oblong, 2.5 to 5 cm. long: calyx 
4-parted. (7. nervosum, var. Torr. Mex. Bound.)—Westerp borders of Texas. 
2. T. platystegium Torr. Scabrous-puberulent, not atall hirsute: leaves oblong- 
lanceolate: bracts subcordate, mucronate-acuminate, lightly 3 to 5-plinerved and 
veiny: calyx 5-parted.—Southern borders of Texas. 
13. DICLIPTERA Juss. 
Chiefly herbs, with flowers not covered by primary bracts (of main 
axis) but involucrate (either singly or in a fascicle) by 2 valvately op- 
posed and nearly equal bractlets, small dry 4 or 5-parted calyx, deeply 
bilabiate corolla, 2 stamens, anthers with a narrow connective, inflores- 
cence various (not strobilaceous-spicate), and placente as in the pre- 
ceding. 
1. D. brachiata Spreng. From almost glabrous to pilose-pubescent: stem 6-an- 
gled, with numerous spreading branches: leaves oblong-ovate, mostly acuminate, 
5 to 10 em. long, slender-petioled: involucres clustered in the axils and more or less 
paniculate, short-peduncled and subsessile; the valves narrowed at base, 6 to 10 
mm. long, from broadly obovate with rounded summit to spatulate-oblong, often 
anequal: Jobes of purple or flesh-colored corolla elongated-oblong, 12 mm, or less 
