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8. G. Macombii Torr. Puberulent, 8 to 6 dm. high, from a woody base: leaves 
rather rigid, pinnately 3 to 7-parted into lobes not wider than the rhachis, or entire 
and nearly filiform: glomerules of flowers in a narrow virgate thyrsus: corolla vio- 
let-purple, with tube 12 mm, and obovate lobes 4 mm. long: stamens unequally 
inserted, 2 to 4 of them barely exserted from the throat, with straight filaments: 
ovules 5 or 6 in each cell. (G. multiflora Torr, Mex. Bound, in part, Collomia Cav- 
anillesiana Gray Syn. Fl. in part.)—A species of the mountains of Arizona, but appa- 
rently represented in extreme western Texas by var, LAXIFLORA Coulter, in which 
the flowers are very loosely cymose or scattered, corolla white (perhaps a little pur- 
plish-tinged) and with longer tube, and stamens all included, 
9, G multiflora Nutt. Many-stemmed, 3 to 6 dm. high, with paniculate or virgate 
branches; these cinereous puberulent and the calyx usually hirsute: inflorescence 
nearly as in the preceding: corolla purplish, with slender tube less than 12 mm. and 
lobes barely 4 mm. long: stamens equally or unequally inserted, conspicuously ex- 
serted, upper part of filaments ineurved: ovules 2 to 4 in each cell, (Collomia Cava- 
nillesiana Gray Syn. Fl. in part.)—Western borders of Texas. 
10. G. Havardi Gray. Many-stemmed, low, much branched, villous-pubescent: 
leaves mostly pinnately parted into filiform rigid lobes no broader thanrhachis: flowers 
scattered: calyx hirsute, its lobes almost spinulose: corolla-tube 6 mm. long and 
hardly longer than the limb: filaments equally inserted, conspicuously declined- 
ineurved. (Laselia Havardi Gray.)—Beyond the Pecos, 
+ + + Flowers scattered or crowded, inconspicuously bracted or without bracts : corolla 
from funnelform to rotate: stamens usually inserted in or just below the sinuses 
of the corolla, not exceeding ils lobes: leaves various, 
++ Corolla funnelform: flowers sometimes crowded, 
11. G. inconspicua Doug]. Mostly low, usually with slight woolly pubescence 
when young, and viscid glandular: leaves mostly pinnatifid or pinnately parted, 
or the lowest bipinnatifid, with short mucronate-cuspidate lobes; uppermost be- 
coming small and entire: flowers either somewhat crowded or at length loosely pani- 
cled: corolla violet or purplish, 6 to 10mm, long.—Western border of Texas. 
++ ++ Corolla rotate: flowers scattered, blue or white. 
12. G. incisa Benth. Merely pubernlent: stems slender and weak, diffuscly 
branched from base, leafy: leaves thin; radical and lower cauline slender-petioled, 
roundish ovate or obovate, acutely and incisely toothed or lyrately cleft; upper 
lanceolate, sparsely laciniate; uppermost linear, more entire, sessile, and gradually 
reduced to bracts: pedicels 2.5 to 5 em. long, rigid, loosely and effusely paniculate.— 
Shady banks and thickets, throughout Texas and adjacent Mexico, 
13. G. rigidula Benth. Glabrous or viscid-glandular: stems slender and diffusely 
branched from a stout woody base: leaves rigid, mostly pinnately (or uppermost 
nearly palmately) parted or cleft into few or several lanceolate-linear or subulate 
lobes: pedicels 2.5 em. long or less.—Rocky plains and hills, At the western border 
of Texas is var. ACEROSA Gray, which is more dwarf, rigid, and suffruticose, with 
very leafy branches, leaf-divisions al! slender-subulate or acerose and somewhat pun- 
gent, and short pedicels. 
HYDROPHYLLACEH. (WATERLEAF FAMILY.) 
Commonly hairy herbs, with mostly alternate leaves, regular 5-merous 
and 5-androus flowers, in appearance between the foregoing and the 
next order, but with entire and 1-celled ovary with 2 parietal 4 to many- 
ovuled placente (rarely 2-celled by union of placentie in axis), 2-cleft 
or 2 separate styles, and 2-valved 4 to many-seeded pod. 
