V10LACE5:. (violet family.) 25 



Var. ',?) Btrictnim, Wat. Sepals green, persistent; fruiting raccmea crowded eylin- 

 dric-capitate, the pedicels erect, low and spreading. This plant seems to be a separate 

 •pecies. It has been found in San Francisco, by Misa Annie Hughes. 



9. THYSANOCARPUS, Hook. 



Pod 1 -celled, 1 -seeded, plano-convex, mostly pendulous on slender pedicels. Flowers 

 minute, white or rose-colored. 



1. T. curvipes. Hook. Six inches to two feet high; the upper leaves clasping by a 

 broad auricled base; pods densely tomentose or smooth, 2 to 4 lines in diameter, the wing 

 entire or crenate, veined and often perforate, emarginate at the top and tipped with the 

 purple style. The perforate-wing form called Lace-pod. 



2. T. laciniatus, Nutt. Smaller and more slender; the cauline leaves scarcely 

 auricled at the base; pods obovate, cuneate at the base, 2 to 3 lines long. 



Var. crenatus, Brewer. The broader wing deeply crenate or fringed. Fringe-pod. 



3. T. radians, Benth. Pods round, 4 to 5 lines in diameter, scarcely emarginate, 

 with a broad entire translucent wing conspicuously marked by radiating nerves. 



4- T. pusillus, Hook- May be known by its minute pods hirsute with hooked haira. 



10. RAPHANX7S, L. Radish. 

 Ck)arse introduced annuals. 



1. R. sativTis, L., has a pointed 2-seeded pod. 



2. K. Haphanistnun, L., has a necklace-shaped pod, long beaked, l-9-86eded. 



Oeder 7. CISTACE^. 



Flowers perfect and regular. Sepals 5, persistent; and two of them smaller, wholly 

 exterior, and bract-like. Petals 5, usually ephemeral. Stamens indefinite, with filiform 

 filaments; anthers short. Style one. Capsule 3-valved. 



1. HELIANTHEMUM, Toum. 



Petals broad. Stamens numerous (about 20). Style short; stigma 3-lobed. Low 

 branching herbs, or somewhat woody; flowers yellow, opening only once, in sunshine. 



1. H. Bcoparium, Nutt. Much branched, hairy or smooth, about a foot high; leave* 

 narrow, 4 to 12 lines long, alternate; flowers on slender pedicels, one or several termin- 

 ating the branches; petals 4 lines long. 



Oeder 8. VIOLACEiE. 



Herbs distinguished by the irregular one-spurred corolla of 5 petals, 5 stamens, adnata 

 »»*troBe anthers conniving over the pistil, which has a club-shaped style with a one sided 



