GEEA>^IACE^. (geranium FAMILY.) 33 



dtipular glands very small; flowers in close terminal clusters; petals about 3 lines long; 

 capsule globose. 



4. L. Califomicum, Gr. Smooth, glaucous, 6 to 18 inches high; stipular glanda 

 conspicuous; flowers in small cymes or the lower solitary; petals 4 lines long, capsule 

 acute, shorter than the calyx. 



5. S. spergulinum, Gr. Smooth, 6 to 15 inches high; leaves without stipular 

 glands; pedicels 3 to 6 lines long, and mostly solitary; sepals slightly glandular, minute; 

 capsule obtuse, exceeding the calyx slightly. 



Oeder 15. GERANIACEiE. 



Flowers perfect on axillary peduncles, regular (in our species) and symmetrical, the 

 parts in fives. Stamens mostly in two sets, those alternate with the petals sometimes 

 Bterile. Ovary deeply 5-lobed, with a prolonged axis, or 5-celled. 



§ 1. Carpels 5, one-seeded, separating at maturity from the long central axis; the styles 



forming long twisted tails. 



Fertile stamens 10; tails of the carpels not bearded Geranium. 1 



Fertile stamens 5; tails of the carpels bearded Erodium. 2 



§ 2. Carpels 5, one-seeded, fleshy, distinct Limnanthes. 3 



§ 3. Carpels combined into a 5-celled ovary Oxalis. 4 



1. GERANIUM, L. Cranesbill. 



Stamens 10 with anthers, a gland behind the base of each of the shorter 5; filaments 

 bearded at the base. Ovary 5-lobed; style 5-lobed at the top; the roundish-oblong carpels 

 splitting away from the persistent beaked axis. Leaves palmately lobed and mostly 

 opposite, scarious stipules; swollen- jointed stems. 



1. G. Carolinianum, L. Difiusely branched, pubescent; leaves 1 to 2i inches in 

 diameter, palmately 5-7-parted, the divisions cleft into linear lobes; petals rose-colored 

 equaling the awned sepals, 2 or 3 lines long; carpels hairy; tails half an inch long. 



G. incisum, Nutt., with large purple flowers, grows in the Sierra Nevada, and in 

 Humboldt County. 



2. ERODIUM, L'Her. 



Characters as in the last; but the filaments dilated, the 5 opposite to the petals sterile 

 and scale-like; carpels attenuate to a sharp bearded base; the tails long bearded on the 

 inner side. Leaves commonly pinnate and bipinnately parted or lobed; peduncles 

 umbellately 2-several-flowered with a 4-bracted involucre at the base of the pedicels; 

 flowers small. 



1. E. cicutarium, L'Her. (Filaeia or Pin-Clover.) Hairy, much branched. 



