Seeds in two rows, minute; cotyledons incumbent. A low hirsute branching annual,
with pinnately divided leaves, and yellow, solitary axillary flowers.
1. T. gracile, Hook. Stems weak; petals 14 to 3 lines long, broad; pods 6 to 20
lines long, pointed at both ends.
7. CAPSELLA, Mench. SHEPHERD’s PURSE.
Pod obcordate, much flattened, many-seeded; cotyledons incumbent. Slender and
mostly smooth annuals, with minute flowers.
1. ©. Bursa-pastoris, Mench. Somewhat hirsute at base; radical leaves mostly
runcinate-pinnatifid, the cauline lanceolate, clasping.
2, ©. divaricata, Walp. Very slender; pods elliptic-oblong; is more rare,


8. LEPIDIUM, L PEPPERGRASS.
Pod orbicular or obovate, emarginately 2-winged at the summit; the cella 1-seeded.
Low herbs, with pinnatifid or toothed leaves, and small white flowers; the petals in
some species wanting, and the stamens only 2 or 4.
1. L. latipes, Hook. Stems stout, simple 1 to 3 inches high, surpassed by the
irregularly and coarsely pinnatifid leaves; racemes capitate, in fruit an inch long or less;
sepals very unequal; pod strongly reticulated, the acute wings nearly as long.
2. L. oxycarpum, Torr. & Gr. ‘Stems simple or branched 3 to 6 inches high;
smooth; raceme lax, elongated; pod smooth, rounded, nodding, the bread acute teeth
short and divergent; petals none.
3. L, nitidum, Nutt. Similar to the last, but larger; petals present; pods smooth
and shining, acutely margined.
4. L. Menziesii, DC. Hispid; petals none; pods not margined, except by the
very short teeth at the summit.
VIOLACEH. (VIOLET FAMILY.) 25


Var. (?) strictum, Wat. Sepals green, persistent; fruiting racemes crowded cylin-
dric-capitate, the pedicels crect, low and spreading. This plant seems to be a separate
species. It has been found in San Francisco, by Miss Annie Hughes.
9. THYSANOCARPUS, Hook.
Pod 1-celled, 1-seeded, plano-convex, mostly pendulous on slender pedicels. Flowers
minute, white or rose-colored.
