118 
* Fruit sessile or nearly 80. 
1. G. parviflora Dongl. Soft-villous and puberulent, 6 to 15 dm. high : leaves ovate- 
lanceolate, repand-denticulate, soft-pubescent: spikes dense: fruit oblong-clavate, 
narrowed to both ends, 4-nerved, obtusely angled above, 6 to 8 mm. long.—Through- 
out Texas. ; 
9. G. coccinea Nutt. Canescent, puberulent or glabrate, very leafy, 15 to 30 cm. 
high: leaves lanceolate, linear-oblong or linear, repand-denticulate or entire: flow- 
ers imsimple spikes, rose-color turning to scarlet: fruit terete below, 4-sided and 
broader above, 4 to 6 mm, long.—Throughout Texas. 
3. G. Drummondii Torr. & Gray. Stem suffrnticose at base, a little hairy be- 
low, virgately branched above: leaves somewhat canescently puberulent, lanceolate, 
acute, denticulate or somewhat sinuate: spikes slender, few and loosely flowered : 
fruit very abruptly narrowed at the base and terete when mature, ovate-pyramidal 
above, acute, with 4 strong carinate angles.—Between the Colorado and lower Rio 
Grande west to the Pecos. 
4, G. tripetala Cav. Stem erect, fastigiately branched above, somewhat hirsute, 
leafy : leaves lanceolate, the radical ones spatulate-lanceolate and on long petioles, 
repand or denticulate, acute, clothed with appressed pubescence : spikes slender: 
sepals and petals usnally 3: fruit triquetrous (rarely 4-angled), the sides 1-ribbed 
and plicate-rugose.—From the Brazos to the lower Rio Grande. 
5. G suffulta Engelm. Stem villous with long spreading hairs, but the inflores- 
cence very glabrous: leaves somewhat pilose, glabrate, lanceolate, attenuate at both 
ends, somewhat repand-toothed, the lower oblong-lanceolate and petioled : fruit 4- 
wing-angled, ovate-pyramidal, closely sessile and not narrowed at base, smooth, the 
concave faces slightly 1-ribbed or sparsely tuberculate at base.—From the Colorado 
to the lower Rio Grande, west to the Pecos and New Mexico. 
6. G. Nealleyi Coulter. Similar to the last, but lower part of stem sparingly hir- 
sute and the inflorescence glandular-pubescent: leaves rather crowded below, linear, 
acute, entire, closely sessile or somewhat tapering at base, glabrous except the 
minute and rigid more or less hooked hairs on the margins and midrib beneath : spike 
rather loosely few-flowered ; fruit as in G. suffulta, but with a tapering base or short 
stipe.—In the mountains west of the Pecos (Nealley). 
*™ Fruit slender-pedicelled, 
7. G. sinuata Nutt. Stem suffruticose, diffuse or decumbent, branching and very 
leafy at base, sending off slender and naked flowering branches, glabrous or hairy: 
leaves lanceolate-linear, acute, remotely and acutely sinuate-toothed, glabrous: 
flowers loose, pedicelled: fruit lanceolate or ovate, tapering at both ends,—Through- 
out Texas. 
8 G. villosa Torr. Stems suffruticose and with numerous short, very leafy branches 
at base, canescently puberulent with villous hairs intermixed, and sending up naked 
and elongated glabrous and often paniculate flowering branches: leaves tomentose- 
canescent on both sides, lanceolate, remotely and acutely toothed or rarely entire: 
raceme loosely-flowered : fruit slender, 4-sided, tapering at both ends, on a filiform 
pedicel, at length reflexed.—On the sandy plains west of the Pecos. 
9. G. macrocarpa Rothrock. Stems and branches scabrous with hirsutish pubes- 
cence: leaves small, rather thick and obtuse, with revolute margins hispidly ciliate, 
the lower ones 20 mm. long by 2 to 4 mm, wide (with 1 or 2 strong teeth), the upper 
ones entire and gradually reduced to bracts: raceme (or contracted panicle) rather 
loose: fruit canescent-puberulent, fusiform, obtusely angled and strongly ribbed 
between the angles.—In the mountains west of the Pecos. Reported also by Rever- 
chon from the Llano Valley. 
