392 POLYGONACEAE 



at base and in whorls at tlie nodes or reduced above ; involucres eylindric- 

 urnshaped, 6-ribbed. 2 lines long, reticulate between the ribs; involucral teeth 

 6, nearly equal, with scarious margins, the tips uncinate or straight ; calyx- 

 lobes bifid or usually so. , 



Sierra Nevada foothills. 



Loes. — Clover Creek Falls, -Shasta Co., M. S. Balcer 460; Chico, Parry; Sweetwater Creek, 

 El Dorado Co., K. Brandcycr ; Merced Co. foothills, Buckminister; Raymond, Congdon ; Toll 

 House, Fresno Co., Hall if ChaiKlhr 30. 



Ref. — Chorizanthe .steltail.^ta Benth. in DC. Prodr. 14: 20 (1856), type loo. east side 

 of the upper Sacrainonto Valley, Hartiveg 1937. 



4. C. pungens Benth. (Pig. 67c.) Stems prostrate or at first erect, more 

 or less dichotomous, 2 to 1.^ inches long, the involucres in head-like clusters 

 on very short lateral brauchlets or terminal ; herbage villous pubescent ; leaves 

 basal and in pairs at the lower nodes, spatulate or oblanceolate, narrowed to 

 a petiole, Vi; to 2 (or 4) inches long, reduced above to bracts; involucres 

 cylindric-urnshaped, hairy, 1 to 11.4 lines long, subtended by subulate or 

 acicular pungent bracts; involucral tube sharply 6-angled or -ribbed, un- 

 equally 6-toothed, the alternate teeth shorter, all uncinate and more or less 

 scarious-margined towards the base; calyx white, its lobes equal, oblong, 

 erose-dentieulate, hairy on the outside ; stamens 9 or 6. 



Sand-dunes and sand.y valleys along the coast from Marin Co. south to 

 Santa Barbara Co. 



Logs. — San Francisco, Jcpsoii ; Eockspur, Monterey Co., K. Brandegee ; Seaside, Heller 

 6749; Pacific Grove, Jepson; Surf, K. Brandegee. 



Var. dififusa Parry. Leaves all basal ; scarious border of the involucral 

 teeth pink. — Valleys, Santa Cruz to Monterey. 



Var. nivea Curran. All the involucral teeth with scarious white margins, 

 the alternate teeth smaller : calyx yellow, its lobes with white margin. — Moun- 

 tains near San Luis Obispo; Seasitle, F. G. Woodcock. 



Var. cuspidata Parry. Involucral teeth without scarious margins or the 

 margins scant, otherwise identical with the species. — San Francisco {Davy 

 mi) north to Dillon's Beach {U. S. Baker). 



Var. robusta Jepson n. comb. Stems erect, branched above, 14 to 2 feet 

 high ; heads large, dense, mostly terminal or subterminal ; involucral teeth 

 with narrow margins or none. — Bay region south to Monterey Bay : Alameda, 

 Jepson; Colma, K. Brandegee; Aptos, Parry. 



Refs. — Chorizanthe pungens Benth. Trans. Linn. Soc. 17: 419, t. 19, tig. 2 (1837), type 

 from California, Douglas; Jepson, Fl. W. Mid. Cal. 151 (1901). C. aiulersonii Parry,. Proc. 

 Davenp. Acad. 5: 175 (1889), type loc. Scotts Valley near Santa Cruz, Anderson. C. doug- 

 lasii Parry, I. c. Var. diffusa Parry, 1. c. 4: 60 (1SS4). C. difl'ma Benth. in DC. Prodr. 

 14: 26 (1856), type loe. Monterey, Hartweg 1938. Var. nivea Curran, Bull. Cal. Acad. 1: 274 

 (1885), type loc. mountains near San Luis Obispo. Var. cuspidata Parry, Proc. Davenp. 

 Acad. 4: '60 (1884). C. cuspidata Wats. Proc. Am. Acad. 17: 379 (1882), type loc. San 

 Francisco, M. E. Jones 2386. C. villosa Eastw. Bull. Torr. Club, 30: 485 (1903), type loe. 

 Bodega Pt., Eastwood. Var. kobusta Jepson. C. robiLsta Parry, Proc. Davenp. Acad. 5 ; 

 176 (1889), type spms. from Aptos, Parry, and Alameda, Greene; Jepson, Fl. W. Mid. Cal. 

 ed. 2, 129 (1911). 



5. C. douglasii Benth. Stem erect, tri- or di-ehotomously branching, 4 to 

 6 inches high ; basal leaves spatulate, shortly petioled, the cauline oblong to 

 linear ; bracts subulate ; herbage somewhat hairy pubescent ; involucres hairy, 

 condensed in terminal heads, urnshaped-cylindric, li/o lines long, sharply ribbed, 

 reticulate between the ribs ; involucral teeth spreading, membranous margined 

 below the short hooked awn, the membrane continuous in the sinus be- 

 tween the teeth ; calj'x rather deeply cleft, its lobes equal, oblong-ovate, obtuse, 

 erosulate. 



Monterey Co. 



Locs. — No exact station known. We maintain this as a species with misgivings but refer 

 here with considerable certainty a collection made in Monterey Co. by Mrs. Mary S. Clemens 



