564 



PAPAVERACEAE 



Fig. 120. Dendromecon rigida Benth. o, 

 flowering branchlet; h, dehiscing capsule. 

 X %. 



Loes. — Coast Eanges: Dunsmuir, Jepson; Mt. Tamalpais, Jepson 7453; Sommersville, Con- 

 tra Costa Co., Cliesnut 4- Brew; Mt. Diablo, Jepson; Moraga Eidge, Jepson; Santa Lucia Peak, 

 Jepson; San Antonio Trail, Santa Lucia Mts., Jepson. Sierra Nevada: Yankee Hill, Colum- 

 ^ ^ bia, A. L. Grant 669; Hazel Green to Bowers 



./S^ 'j^?"/ Cave, Mariposa Co., Jepson; Watson Spr., 



Sequoia Park, Jepson. SoutJiern California: 

 Rattlesnake Caiion, Santa Barbara, Jepson 

 9144; O.iai Valley, OJive Thacher 15; San 

 Bernardino, Parish; Temecula Wash, Jep- 

 son. 



Var. harfordii K. Brandgee. Tree-like 

 or shi-ubby, (i to 10 (or 18) feet high, the 

 branches more or less drooping; leaves ellip- 

 tic, 11/4 to 514 inches long, entire, rarely 

 minutely roughened. — Santa Barbara Isls. : 

 Avalon, Blan-che Trask; near Frey's Harbor, 

 Santa Cruz Isl., Frida NiedermilUer; Santa 

 Rosa Isl.', Philip MiUs Jones. 



Refs. — Dexdromecon rigida Benth. 

 Trans. Hort. Soe. ser. 2, 1:407 (1835), type 

 grow-n from Cal. seed, Douglas; Jepson, Fl. 

 W. Mid. CaL 206 (1901). Var. harfordii 

 K. Brandegee, Zoe 4:83 (1893). D. har- 

 fordii Kell., Proc. Cal. Acad. 5:102 (1873), 

 type loc. Santa Rosa Isl., W. G. Harford; 

 Trask, Erythea 7:145 (1899). D. flexilis 

 Greene, Bull. Torr. CTlub 13:216 (1886), type 

 loc. Santa Cruz Isl., Greene. 



9. ESCHSCHOLTZIA Cham. 



Annuals or perennials with watery juice, petioled temately dissected leaves 

 and peduncled yellow flowers. Receptacle hollowed or excavated, surrounding 

 the base of the pistil, the calyx or corolla in consequence seeming as if perigynous ; 

 this receptacle (or torus) in addition often bears a spreading outer and an erect 

 inner rim. Sepals completely united into a calyptra or {lointed cap-like body 

 which parts from the receptacle and is pushed off by the expanding petals. 

 Stamens many, mostly on the base of the petals ; anthers comnionh' longer than 

 the filaments. Ovary linear; style very short; stigmas commonly 4, subulate- 

 filifonn, unequal. Capsule 1-celled, many-seeded, 2-valved. — Dehiscence of the 

 capsule commonly occurs in flight, after the capsule parts from the receptacle 

 and before it reaches the ground, usually beginning at the moment that the base 

 of the capsule is released from the vise-like hollowed receptacle, this action 

 allowing the valves which are elastically dehiscent from base to apex, to separate. 

 — Species about 10. Oregon to New Mexico, California and northern Mexico. 

 (Dr. J. P. Eschscholtz, college friend of Adelbert von Chamisso, German poet 

 and naturalist, and his companion on Kotzebue's scientific voyage around the 

 world. ) 



Cultural and field studies in Eschscboltzia. — Eschscholtzia is a genus which by the very 

 unequal differentiation of its component species exhibits, like many other genera, very 

 diverse .specific values as they exist in nature. The true annuals consist of a number of species, 

 which whUe not widely separated, are fairly constant in certain characters and recognizable 

 as definite units of approximately equal status. The case is very different with the perennial 

 forms. These comprise an aggregate, that is to say a central type with a number of more 

 or less diverging forms, these diverging forms representing an endless complex of fluctuating 

 and trivial variations in habit, vegetative organs, development of torus rim, form and size 

 of calyptra, size and color of petals, number of stamens, number and relative size of stigmas, 

 and rarely in the conditions of the cotyledons with respect to entirety, but all as now under- 

 stood in the light of present investigations inevitably to be considered as a single species, 

 since there are no two factors constantly associated. Examination and comparison of long 

 series of specimens from the same locality and from different localities in aU parts of California 

 in connection with data derived from cultures and from experiments ivith hundreds of marked 

 plants growing naturally prove satisfactorily that these variations may occur in endlessly 

 varied and indefinite combinations. 



