302 GERANIACEAE (GERANIUM FAMILY) 



narrowly oblong to linear, acute, 2.5-5 cm. long; stipules mostly narr05y, often 

 small: peduncles 2-6-flowered;- flowers purple, 12 mm. long. — Colorado and 

 southward. ' , 



5. LathyrusleucanthusRydb. Bull. Torr.Bot. Club 28: 37. 1901. Newly 

 glabrous, 2-3 dm. high; stem angled: stipules very narrow,, semisagjttate; 

 leaflets 2-4 pairs, elliptic or narrower, veiny; tendrils of the lower leaves, short 

 or wanting; of the upper elongated and 2-3-divided: racemes 2-4-flowejed: 

 calyx glabrous, cleft to the middle: corolla white or yellowish, about 15 mm. 

 long; the banner broad. L. palustris and L. myrtillifolias as to the plants of 

 our range. — Colorado to Utah and Nevada. • ' t^ 



6. Lathyrus ochroleucus Hook. Fl. Bor. Am. 1: 159. 1833., Glabrous or 

 subglaucous; stems slender, climbing or scrambling: stipules broad, foliaceouB, 

 semicordate, half as large as the thin ovate leaflets: peduncles 7-10-flowered; 

 flowers 12-20 mm. long, yellowish-white: pod sessile, glabrous, 3-4 cm. long. — 



"Coming into the northeastern part of our range; extending far northward an(l 

 eastward. 



7. Lathyrus utahensis Jones, Proc. Cal. Acad. 5: 678. 1895. Leaflets 

 4-6 pairs, oval or ovate, 2-4 cm. long, obtuse at both ends,;apiculate at/apex, 

 prominently veined: stipules large, reniform, variously cut: peduncles about 

 equaling the leaves, 4r-6-flowered; flowers 15-20 mm. long, white or oehroleUT 

 cous, sometimes tinged with purple: calyx-lobes subulate-triangular,; pod 

 4-5 cm. long, smooth as is the rest of the plant. — Colorado and, Utah, 



58. GERANIACEAE St. Hil. Gebanium Family 



Herbs, with alternate or opposite lobed or dissected leaves^ and complete, 

 regular, symmetrical 5-merous flowers. Sepals persistent. Petajs deciduous. 

 Stamens same number as petals or 2-3 times as many; filaments distinct; 

 anthers versatile. Pistil of 5 united carpels, the styles imited intb a column! 

 Fruit a 5-celled capsule. 



Stamens 10; carpel-tails naked on the inner side 1, Geranium. 



Stamens 5; carpel-tails hairy on the inner side 2, Erpdium. 



GERANIUM L. GEKANitrM oh Cbanesbill 



Annual or perennial herbs, often glandular-pubescent, usually with (leeply 

 lobed or dissected leaves with conspicuous stipules. Pfetals imbricated, alter- 

 nating with 5 glands. Stamens usually 10, 5 of them longer and alternating 

 with the 5 shorter ones. Capsule 5-lobed, each lobe sepa,rating ela^tically 

 at the base at maturity, curling upward and back Upon the united styles;, the 

 cavities 1-seeded. - '' 



Annual or biennial; adventive. , ' , ' ..'i 



Stamens 5; seeds smooth , . , , , . , .1, G, pusillum. . ,- ■ . 



, StE^mens 10; seeds reticulated 2. G. carolinia&lim.' 



Perennial^; indigenous. ■ ■ * ■ • * 



No glaiidular pubescence ' ' ■ , Z, G. caespitosum. 



More or less glandular-pubescent. • -, ^ 



Leaves and flowers large; petals (within) and filaments more or 

 less Jong-villous. 

 Plants' single or scarcely tufted. 



Pubeacencei tipped with purple glands .... 4'..G. Richardsonii. 

 Pubescence, viscid-glandular . . . , . . 5." G. viscoais^imuni. 

 Plants caespitpse-tufted. 



Pubescence short-glandtilar, mostly above only .,: - . v,'6. G. Fremontii. 

 Pubescence viscid-villous as well-as short-glandulai' . i . 7. G. Parryi. 

 Leaves -and ;flowers small; petals and filaments not long- 



villous . . '. . 8. G. longipes. 



1. Geranium pusillum L. Sp. PI. Ed. 2, 957. 1763. Slendei;, , spreading, 

 soft-pubescent on the calyx, etc., somewhat glandular-villous or wit^,giio^ 



