250 BRASSICACEAE 



12. Streptanthus niger Greene. Black Jewel Flower. Fig. 1947. 



Streptanthus niger Greene, Bull. Torrey Club 13: 141. 1886. 

 Euclisia nigra Greene, Leaflets Bot. Obs. 1: 83. 1904. 



Glabrous and glaucous throughout or minutely and sparsely setose near the base, the stems 

 3-9 dm. high, branching, more or less flexuous. Lower leaves linear-lanceolate, 3-6 cm. long, 

 pinnately lobed or dentate, somewhat clasping at the base, the teeth remote, callus-tipped ; upper 

 leaves entire, linear, acute, conspicuously sagittate-clasping at the base; sepals very dark purple, 

 smooth, somewhat irregular, 6-8 mm. long ; petals with stout, thick, purple claw and small white 

 blade ; longer filaments united, their anthers small and rudimentary ; pedicels slender, 5-20 mm. 

 long ; pods strongly flattened, straight or nearly so, erect or ascending, 4-7 mm. long ; style very 

 short; stigma small, entire; seeds narrowly winged. 



Transition Zone; central California. Type locality: Point Tiburon. April-May. 



13. Streptanthus secundus Greene. Tamalpais Jewel Flower. Fig. 1948. 



Streptanthus secundus Greene, Fl. Fran. 261. 1891. 

 Euclisia secunda Greene, Leaflets Bot. Obs. 1: 83. 1904. 



Annual, the stems erect, simple or sparingly branched, slender, 2-6 dm. high, hispid-hirsute 



on lower leaves and stem. Lower leaves linear-oblanceolate, pinnately toothed or lobed, the 



upper linear-lanceolate, sparsely toothed ; inflorescence racemose, many-flowered, secund ; sepals 



yellowish, somewhat unequal, sparsely hirsute, about 6 mm. long ; petals pale ; longer filaments 



united ; pedicels ascending, horizontal or somewhat recurved, 5-7 mm. long ; pods strongly 



flattened, recurved or pendent at maturity, 4-6 cm. long. 



Upper Sonoran Zone; Coast Range foothills, Marin County to Lake County, California. Type locality: 

 "northern base of Mt. Tamalpais." April-May. 



14. Streptanthus insignis Jepson. Plumed Streptanthus. Fig. 1949. 



Streptanthus insignis Jepson, Man. Fl. PI. Calif. 420. 1925. 



Hirsute-hispid throughout, the stems usually branched, 1-3.5 dm. high. Leaves linear- to 

 oblong-lanceolate, 2.5-6 cm. long, pectinately subpinnatifld, sessile and auriculate; racemes 

 loosely flowered, tipped at the apex by a plume-like purple tuft composed of numerous elongated 

 sepals of sterile flowers ; pedicels 2-3 mm. long, recurved or spreading ; sepals 5-6 mm. long, dark 

 purple, sparsely short-hispid ; petals exserted 3-4 mm., the claws purple, the blades white veined 

 with purple, crisped ; pods 5-7 cm. long, slightly over 2 mm. wide, compressed ; seeds flat, winged. 



Rocky hillsides, Upper Sonoran Zone; Inner Coast Ranges, San Benito, Fresno, and Monterey Counties, 

 California. Type locality: "Warthan," California. April-June. 



15. Streptanthus callistus J. L. Morr. Royal Streptanthus. Fig. 1950. 



Streptanthus callistus J. L. Morr. Madrono 4: 205. 1938. 



Low simple to much branched annual, 3-6 cm. high, sparsely hispid throughout. Lower 



leaves broadly oblong-obovate, 5-15 mm. long, sessile, coarsely dentate, often reddish, upper 



similar but clasping at base; racemes rather densely flowered, terminated by a conspicuous tuft 



composed of the modified and colored parts of sterile flowers ; normal flowers on short stout 



pedicels ; sepals lanceolate, saccate at base, green, 5 mm. long ; petals bright reddish purple, 



prominently veined, 10 mm. long, spatulate-obovate, undulate-margined; upper pair of stamens 



connate nearly to the apex, and the lower pair scarcely to the middle, the lateral free; pod 15-20 



mm. long, erect, incurved, terete; seeds spheroidal, not winged. 



A beautiful dwarf species known only from the Mount Hamilton Range, Santa Clara County, California. 

 April-May. 



16. Streptanthus hispidus A. Gray. Mount Diablo Jewel Flower. Fig. 1951. 



Streptanthus hispidus A. Gray, Proc. Calif. Acad. 3: 101. 1864. 

 Euclisia hispida Greene, Leaflets Bot. Obs. 1 : 83. 1904. 



Hirsute-hispid throughout, the stems usually branched, 1-2 dm. high. Leaves thick, 1-6 cm. 

 long, obovate-cuneate, all sessile except the lowermost, these with a broad petiole, coarsely 

 toothed toward the apex, the teeth obtuse ; sepals hispid or nearly glabrous, purplish, 5-6 mm. 

 long ; petals purplish with white margins, narrow, about twice as long as the sepals ; pedicels 

 erect or ascending, 2-4 mm. long ; pods strongly flattened, 3-7 cm. long, 1-2 mm. wide, hispid- 

 hirsute. 



Transition and Upper Sonoran Zones; summits of the higher peaks, Coast Ranges, central California. 

 Type locality: on the summit of Mount Diablo, Contra Costa County. April-May. 



17. Streptanthus heterophyllus Nutt. San Diego Streptanthus. Fig. 1952. 



Streptanthus heterophyllus Nutt. in Torr. & Gray, Fl. N. Amer. 1 : 77. 1838. 

 Caulanthus heterophyllus Payson, Ann. Mo. Bot. Gard. 9: 298. 1923. 



Annual, more or less hirsute-pubescent, especially towards the base, the stem erect, simple 

 or sparingly branched, 3-10 dm. high. Leaves broadly linear or linear-lanceolate, pinnatifid with 

 divaricate lobes, sinuate-dentate or subentire, all but the lowermost amplexicaul, 3-12 cm. long; 

 inflorescence lax, racemose ; sepals purple, linear-lanceolate, not saccate, nearly equal, about 9 

 mm. long ; petals pale with purple veining, linear, recurved, 12-14 mm. long ; filaments distinct ; 

 pedicels recurved or refracted, hirsute, 4-8 mm. long ; pods pendent, straight, somewhat com- 

 pressed, glabrous, 5-8 cm. long, 1.5-2 mm. wide. 



Upper and Lower Sonoran Zones; southern California. Type locality: San Diego. March-May. 



