SYNOPSIS OF THE FLORA OF COLORADO. 17 



thickened at the end, and forming an exterior cup-shaped calcyculus ; 

 sepals ovate-lanceolate, cuspidate, strongly 3-nerved, glandular spinu- 

 lose-scabrous on the margins, longer than the globose capsule ; petals 

 sulphur-yellow. Canon City, Brandegee; Greene. 



GERANIUM BICHARDSONH, F. and M. (G. albiflorum, Hook.) Stem 

 erect, l-3 high, dichotomously branching, glabrous below, branches 

 slender] leaves deeply 5-parted, lobes sharply incised, sparsely pube- 

 scent; petioles smooth; radical ones on long petioles, uppermost opposite, 

 on short petioles, rather acuminate; pedicels and sepals glandular-pilose; 

 petals entire, white or pale rose-color, liirsute at base; filaments pilose 

 at base, equaling the pilose styles, which are connate one-third their 

 length; capsule glandular-pilose. Growing in damp, shaded spots along 

 water-courses in the mountains, frequent. Taller but less robust in all 

 its parts and less hairy than the following, from which in some forms it 

 can scarcely be distinguished. Hall & Harbour, 88; Porter; Brande- 

 gee; Coulter. 



GERANIUM FREMONTH, Torr. Plant. Fendl, p. 26. Perennial, stems 

 numerous, diffusely branching. 6'-! in height, more or less pubescent 

 throughout, with a short, close, glandular pubescence sparsely intermixed 

 with longer, pilose hairs; upper leaves deeply 3-5-cleft, truncate at base, 

 or the lowest cordate with a broad sinus, radical ones 7-cleft, segments 

 3-lobed or incised, mucrouate-acute ; peduncles l'-3' long, bearing two 

 flowers on pedicels 1' 2' long; sepals short-awned; fruiting pedicels 

 more or less divaricate and declined; petals obovate, emargiuate, light 

 or deep purple, villose at the base, sparingly villose-bearded on the veins; 

 filaments pilose-ciliate, equaling the naked styles which are connate be- 

 low; seeds delicately reticulated; stems numerous and spreading, divari- 

 cately branched above, growing in dense tufts, with large purple flow- 

 ers 1' in diameter. Very common on dry, open hill-sides, on the plains 

 and in the mountains. Dr. Smith; B. H. Smith; Porter; Coulter. The 

 degree of pubescence is variable, some forms being nearly smooth. 



OXALIS VIOLACEA, L. Glen Eyrie. Porter. 



OXALIS STRICTA, L. In the lower foot-hills. Dr. Smith; Brandeyee ; 

 Coulter. 



ZYGOPHYLI.ACE^E. 1 



KALLSTRCEMIA MAXIMA, T. & G. (Tribulus mcucimus, L.) Stems 

 diffusely procumbent, 1-_J long leaves opposite, abruptly pinnate; 

 leaflets in three, or, rarely, four pairs, oblong or oval; mucrouate, slightly 

 falcate, pubescent beneath, terminal ones largest; peduncles 1' long, 

 solitary, axillary, 1-flowered ; flowers yellow ; petals marcescent ; cocci 

 gibbous below, tuberculate. Fremont County, Brandegee. 



R. Br. Flowers perfect, regular, sepals 4-6. JEstivatiou 

 usually convolute. Petals 4-6, alternate with the sepals, clawed; at lirst short and 

 scale-like; at length equal to the sepals. Stamens twice as many, hypogonous. Fila- 

 ments distinct, dilated at base, sometimes placed on the hack of a small scale. Anthers 

 fixed near the middle, introrse. Ovary" of 4-5 united carpels, opposite the petals, 

 with five scales or glands at base, or surrounded by a sinuate disk. Ovules two or 

 more, attached to the inner angle of the carpel, pendulous or rarely erect. Styles and 

 stigmas united. Fruit capsular, carpels 4-5, which sometimes iu fruit split into ten 

 1 -seeded cocci without transverse partitions. Herbs, shrubs, or trees. Leaves opposite, 

 stipulate, not dotted, rarely simple. 



KALLSTRCEMIA, Scop. Sepals 5-6, persistent, lanceolate or subulate. Petals 5, 

 obovate. Filaments 10-1:>, naked. Ovaries H'i-12-celled, cells 1-ovuled. Berries 

 separating from the persistent styliferous axis, 1-seeded. indehiscent. Style conical, 

 10-furrowed. Stigma capitate, 10-ribbed. 



2 F C 



