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flowers have a 4-parted calyx with linear segments, 4 stamens with dis- 
tinct filaments, and no ovary. The pistillate flowers have the calyx- 
limb shortly 2-lobed or obsolete, no stamens, 2 persistent styles stigmatic 
on the inner side, and a 1-celled ovary with 2 pendent ovules.—Our 
species all have the fertile aments with more or less distant flowers and 
more or less foliaceous bracts. 
1. G. ovata Benth. A shrub 5 to 20 dm. high, with branchlets and inflorescence 
more or less silky-pubescent: leaves narrowly lanceolate to ovate, mostly acute and 
mucronate (sometimes obtuse), clothed on both surfaces with a silky pubescence (or 
glabrate above), 2.5 to6 cm. long, with thickened muriculate margins: sterile aments 
with small connate bracts; fertile aments 2.5 to 7.5cm. long, with usually foliaceous 
and distinct bracts: fruit globose to ovoid, becoming glabrous, sessile or short-pedi- 
cellate, 4 to 8 mm, in diameter.—A Mexican species, represented in the Guadalupe 
Mountains of Western Texas (Havard) by forms with narrow leaves and small ovoid 
fruits. Var. LINDHEIMERI Coult. & Evans has branchlets and both leaf-surfaces more 
or less clothed with kinky wool (or upper leaf-surface glabrate with age), and oblong 
or obovate mostly obtuse and mucronate leaves with margins not thickened or muric- 
ulate. (G, Lindheimeri Torr.) Throughout central and western Texas. 
2, G. Wrightii Torr. Shrub 5 to 10 dm. high, becoming glabrate: leaves light 
green (drying bluish), oblong-lanceolate to clliptical or obovate, acute at each end, 
mostly mucronate, with thickish slightly muriculate margins, glabrous (or nearly 
so) on both sides, 1.8 to5 em. long: aments more or less branching and distant- 
flowered ; sterile ones with smaller but distinct bracts; fertile ones 3.5 to 8.5 cm. 
long, the upper bracts rather small, becoming more foliaceous and distinct down- 
wards, until the lowest resemble the ordinary leaves (giving the appearance of sessile 
axillary flowers): fruit globose, becoming glabrous, sessile, 4to 7 mm. in diameter.— 
Counties of extreme western Texas. 
