36 SPRING FLORA 



4. S. incisum Engelm. (S. calif ornicum Wats.; Sophia incisa 

 (Engelm.) Greene.) Stem 1-4 ft. high, with short and more 

 or less glandular pubescence. Leaves once-pinnate (or twice- 

 pinnate to dissected), the divisions sharply cut-lobed into 

 linear to oblong-ovate segments. Stigmas simple. Siliques 

 ascending, equalling or shorter than the ascending pedicels. 

 Seeds in 1 row. In moist soil. May-August. 



4a. S. incisum filipes Gray (Sophia filipes (Gray) Heller) 

 is distinguished from the type by its spreading, thread-like 

 pedicels, which are much longer than the mostly erect siliques, 

 and the seeds usually in 2 rows. On dry hillsides. May-Ang. 



5. S. Thaliamim Gay. (Stenophragma Thaliana (L.) Celac.) 

 Wall-Cress. Stem erect, 1-16 inches high, much-branched; more 

 or less pubescent with simple or forked hairs. Basal leaves 

 forming a loose rosette; 1-2 inches long; narrowed into a 

 petiole; oblanceolate or oblong. Stem-leaves sessile; often 

 entire. Inflorescence a terminal raceme. Flowers white, on 

 very slender, spreading pedicels. Petals about twice the length 

 of sepals. Style very short; stigma 2-lobed. Siliques narrowly 

 linear. Seeds in 1 row in each cell. Dry hills. April-Maj'. 



12. CATJLANTHUS. 



Perennials from a stout tap-root. Leaves lyrate, the di- 

 visions entire. Flowers greenish-yellow or purple. Sepals 

 large, nearly equally saccate at base. Petals with a broad 

 claw. Filaments included, bearing linear, curved anthers. 

 Stigma nearly sessile, somewhat 2-lobed. 



1. C. hast at us Watson. Glabrous; unbranched or sometimes 

 branched. Leaves petioled; the terminal leaflet of the basal 

 leaves is very much larger than the lateral ones, and is ovate 

 with a hastate base. Inflorescence a loose raceme. Flowers 

 reflexed. Sepals narrow and far apart. Petals usually as 

 long as the sepals; toothed on the sides. Pods sessile, 3 inches 

 long or more; spreading. Seeds in 1 row, wingless. In moun- 

 tain valleys. June-August. 



13. THELYPODIUM. 



Biennial or rarely perennial herbs with alternate, petioled 

 or clasping leaves. Flowers white, pink or purple (or some- 

 times yellow). Sepals narrow, equal at base. Petals flat; 

 usually narrowed into a claw at base. Filaments long and 

 slender; anthers linear, sagittate at base. 



1. T. torulosum Heller. (T. sagittatum Endl.) Stems weak, 

 rarely erect, 12-18 inches high. Leaves entire; basal ones 

 lanceolate, long-petioled; cauline sagittate and clasping. Se- 

 pals purplish; petals pale-pink. Silique somewhat torulose. 



14. ERYSIMUM. (Cheiranthus.) Wall Flower. 



Erect branched or unbranched biennial or perennial herbs. 

 Leaves linear or lanceolate; entire, toothed or lobed. Inflor- 

 escence corymbose in bud, but lengthening into a raceme in 

 fruit. Flowers in most species showy; yellow or orange, some- 

 times with a, purplish tinge; often fragrant. Petals clawed. 

 Siliques 4-angled. Seeds in 1 row. 



Flowers showy; about an inch high 1.. E. asperum 



Flowers not showy; about % inch high.... 2. E. cheiranthoides 



