550 FABACEAE 



as long as the tube ; corolla yellow, 8 mm. long, the standard broadly oblong, ascending, longer 

 than the claw ; body of the pod short, little exceeding the calyx, arcuate, 1-seeded, the beak very 

 slender, about as long as the body of the pod. 



Rocky hillsides, Upper Sonoran Zone; southern Sierra Nevada, California, south to Lower California. Type 

 locality: on rocks near San Isabel, San Diego County, California. April-July. 



Hosackia argophylla var. decora Johnston, Bull. S. Calif. Acad. 17: 63. 1918. _ Perennial, the branches 

 arising from a prominent woody root, slender, prostrate, plant silvery-canescent with appressed pubescence 

 throughout but less densely so than in the typical species; umbels usually about 10 mm. long; standard oblong, 

 longer than the claw. Open pine forests and rocky ridges, mainly Arid Transition Zone; San Gabriel and ban 

 Bernardino Mountains, southern California. 



30. Hosackia ornithdpus Greene. Bird-claw Hosackia. Fig. 2739. 



Hosackia ornithopus Greene, Bull. Calif. Acad. 1 : 185. 1885. 



Syrmatium ornithopum Greene, Bull. Calif. Acad. 2: 148. 1886. 



Lotus ornithopus Greene, Pittonia 2: 149. 1890. 



Lotus argophyllus var. ornithopus Ottley, Univ. Calif. Pub. Bot. 10: 238. 1923. 



Perennial, branches numerous, decumbent, 2-5 dm. long, canescent with a close appressed 

 pubescence, internodes 3-7 cm. long. Leaflets 5, oblanceolate to narrowly obovate acute, 6-18 

 mm long silvery with an appressed villous tomentum; umbels capitate, many-flowered, 1-bracted, 

 sessile or' subsessile ; calyx villous-tomentose, 5 mm. long, the teeth subulate equaling the tube ; 

 corolla 7-8 mm. long, the standard oblong-obovate ; body of the pod well exserted beyond the 

 calyx, curved, 2-seeded, attenuated into a slender beak of equal length. 



Rocky ridges. Upper Sonoran Zone; Santa Catalina, San Clemente, Santa Barbara, and San Miguel Islands, 

 southern California. Type locality: Guadalupe Island, Mexico. March-June. 



Hosackia ornithopus subsp. venusta (Eastw.) Abrams. (Hosackia venusta Eastw. Proc. Calif. Acad. III. 

 1-103 pi 8 1898 ) Plants less densely pubescent, canescent rather than silvery, mostly prostrate; peduncles 

 1-^4 cm. long/ San Nicolas Island, the type locality, and on Santa Catalina, where it mtergrades with the typical 

 form. 



31. Hosackia Fremontii (A. Gray) Abrams. Fremont's Hosackia. Fig. 2740. 



Hosackia argophylla var. Fremontii A. Gray, Proc. Acad. Phila. 15: 347. 1863. 



Syrmatium Fremontii Heller, Muhlenbergia 9: 67. 1913. 



Lotus argophyllus var. Fremontii Ottley, Univ. Calif. Pub. Bot. 10: 237. pi. 81. 1923. 



Perennial with decumbent branches 2-4 dm. long, silvery with an appressed silky pubescence. 

 Leaflets 5, oblanceolate to obovate, acute, 5-12 mm. long, densely silky-pubescent; umbels capi- 

 tate densely flowered, sessile, and often approximate at the ends of the branches ; calyx 7 mm. 

 long densely villous, the teeth exceeding the tube ; corolla 8-9 mm. long, yellow turning red in 

 age ;' standard broadly oblong, shorter than the slender claw ; body of the pod short or about 

 equaling the calyx, 1-seeded. 



Rocky ridges, Upper Sonoran Zone; foothills on the western side of the Sierra Nevada, from Placer County 

 to Mariposa County; also in Monterey County, California. Type locality: Sierra Nevada, California. April-June. 



32. Hosackia nivea (Greene) S. Wats. Santa Cruz Hosackia. Fig. 2741. 



Syrmatium niveum Greene, Bull. Calif. Acad. 2: 148. 1886. 

 Hosackia nivea S. Wats. Proc. Amer. Acad. 22: 470. 1887. 

 Lotus argophyllus var. niveus Ottley, Univ. Calif. Pub. Bot. 10: 237. 1923. 



Perennial, silvery throughout with a dense silky pubescence, branches numerous, decumbent, 

 rather stout, 3-5 dm. long. Leaflets 3-5, obovate or oblanceolate, acute or obtuse, 5-15 mm. long; 

 umbels sessile or subsessile, capitate, several- to many-flowered, bractless ; calyx densely villous- 

 tomentose 6-7 mm. long, the teeth subulate, longer than the tube; corolla 8 mm. long, but little 

 exceeding the calyx-teeth; standard obovate; body of the pod little or not at all exserted be- 

 yond the calyx. 



On rocky ridges, Upper Sonoran Zone; Santa Cruz Island, southern California. Type locality: Santa Cruz 

 Island. May-July. 



33. Hosackia prostrata Nutt. Prostrate Hosackia. Fig. 2742. 



Hosackia prostrata Nutt. in Torr. & Gray, El. N. Amer. 1 : 325. 1838. 

 Syrmatium prostratum Greene, Bull. Calif. Acad. 2: 147. 1886. 

 Lotus Nuttallianus Greene, Pittonia 2: 150. 1890. 



Annual or short-lived perennial, from a taproot, the branches numerous, slender, prostrate, 

 strigose when young, 3-8 dm. long. Leaflets 3-5, oblong-obovate, 3-10 mm. long, sparsely 

 strigose or glabrous; peduncles very slender, 5-25 mm. long; umbels 1-bracted, or sometimes 

 bractless, 1-9-flowered ; calyx scarcely 2 mm. long, glabrous or sparsely strigose, the teeth trian- 

 gular, 0.5 mm. long; corolla yellow, tips of the standard and wing often red; pod 2-seeded, 

 usually constricted between the seeds, beak very slender, shorter than the body. 



Gravelly or sandy soils near the coast, Lower Sonoran Zone; Del Mar, San Diego County, California, south 

 to adjacent Lower California. Type locality: "Plains near the sea, St. Diego and St. Barbara, California. 

 March-Sept. 



34. Hosackia micrantha Nutt. San Diego Hosackia. Fig. 2743. 



Hosackia micrantha Nutt. in Torr. & Gray, El. N. Amer. 1 : 325. 1838. 

 Syrmatium micranthus Greene, Bull. Calif. Acad. 2: 147. 1886. 

 Lotus hamatus Greene, Pittonia 2: 150. 1890. 



Annual, branching from the base, the branches very slender, prostrate, 15-60 cm. long, spar- 



