MINT PAMILT 



417 





Low fields, hog wallows of plains, and shallow valley basins, dry in summer 

 but flooded in the rainy season, 10 to 2000 feet : Coast Range valleys from central 

 Mendocino Co. to San Luis Obispo Co. ; Great Valley (but not on west side of the 

 San Joaquin Valley) ; Sierra Nevada foothills from Mariposa Co. to Kern Co. 



May-June. 



Ecol. note. — Pogogyne douglasii is, in May and June, a characteristic inhabitant of the moist 

 beds of former winter pools. The plants are variable as to stature, luxuriance or dwarfing, in more 

 or less direct response to the progress of aridity or to the amount of water stored from the winter 

 rains or to the prevalence of early summer showers. The condition of moist lowland habitats for 

 this species may be such as to favor a continued and somewhat luxuriant flowering in late summer 

 or fall, resulting in long dense spikes (Napa Valley, 

 Brewer 855 in November; Lake Co., Bolander 2667 

 in September) which have a peculiar aspect due to 

 leaf loss by high dry-season insolation, fall weather- 

 ing and concentration of the last flowers at the sum- 

 mit. Even longer spikes (almost twice as long) are, 

 however, displayed by plants from Santa Margarita 

 {U. W. Summers in June). Contrarimse, in adobe 

 depressions where "the soil is thin and dries out rap- 

 idly," are found low slender plants with a single 

 small terminal head-like cluster of flowers (Pine 

 Creek, near Vina, Tehama Co., Heiier 11,334). These 

 various forms, which are here regarded as ecological 

 responses, do not exhibit any essential difference in 

 floral characters. Consequently such forms would 

 not seem to offer a substantial basis for any rank of 

 taxonomic unit. This judgment is confirmed by E. P. 

 Hoover who writes (ms. note) : "Neither Pogogyne 

 parviflora Benth. nor the subspecies named by J. T. 

 Howell (Proc. Cal. Acad. ser. 4, 20:105-128) are 

 convincing to one who has any considerable field ac- 

 quaintance with these plants. The characters used 

 for differentiation between these forms depend to a 

 small extent on the manner in which the specimens 

 have been preserved but largely on conditions of 

 habitat and degree of maturity." The corolla is 

 rarely white. 



Locs. — Coast Ranges: Willits, Little Lake Val- 

 ley, Tracy 14,050; Ukiah, Purdy; Bear Valley near 

 Leesville, sw. Colusa Co., Jepson 8966 ; Big Valley, 

 Clear Lake, Jepson 14,909 ; Windsor, Sonoma Co., 

 Jepson 9302b ; Calistoga, Jepson 7662 ; St. Helena, 

 Jepson 14,902; Pope Valley, Napa Co., Jepson 

 14,907 ; Livermore, Jepsmi ; Cerro Alto Mt., San Luis 

 Obispo Co., Condit 4' Waters. Great Valley: Vina 



(8 mi. s.), Tehama Co., Heller 11,334; Cana, Butte Co., Jepson 16,367; Oroville (10 mi. sw.), 

 Hoover 1155; Sutter City, Eivan 9628; Willows, Glenn Co., Jepson 14,904; Wolfskill sta., nw. 

 Solano Co., Jepson 10,402 ; Little Oak, Vacaville, Jepson 14,903 ; Main Prairie, e. Solano Co., Jep- 

 son li,906; Farmington, San Joaquin Co., Tracy 5793 ; Merced (10 mi. w.), Hooticr 1123 ; Orange 

 Cove, Tulare Co., Hoover 1275. Sierra Nevada foothills: Sebastopol, Mariposa Co., Congdon; 

 Snow Creek, Chowchilla River, Congdon; Fresno Flats, Madera Co.; Raymond (6 mi. s.), Madera 

 Co., Jepson 12,913; Poso Creek Valley, Kern Co. (Proc. Cal. Acad. ser. 4, 20:117). 



Refs. — Pogogyne dougl.^sii Benth., Lab. Gen. et Sp. 414 (1834), type from Cal., Douqlas; 

 Hook, f., Bot. Mag. t. 5886 (1871) ; Jepson, Fl. W. Mid. CaL 461 (1901), ed. 2, 361 (1911), Man. 

 873 (1925). P. douglasii subsp. Ujpica J. T. Howell, Proc. Cal. Acad. ser. 4, 20:114 (1931). 

 P. multiflora Benth., I.e., type from Cal., Douglas. P. douglasii var. multiflora Briq. ; Engler & 

 Prantl, Nat. Pflzfam. 4''':304 (1896). P. parviflora Benth., I.e., type from Cal., Douglas; Jepson, 

 Fl. W. Mid. Cal. 462 (1901), ed. 2, 361 (1911), M.in. 874 (1925). P. douglasii subsp. parviflora 

 J. T. Howell, Proc. Cal. Acad., ser. 4, 20:117 (1931). P. douglasii subsp. ramosa J. T. Howell, 

 I.e. 116 (1931), type loc. Merced, J. T. Howell 2004. P. douglasii subsp. minor J. T. Howell, Lc. 

 116 (1931), type loc. Merced, J. T. Howell 4211. 



2. P. nudiuscula Gray. Stems branching mostly near the base, slender, erect, 

 6 to 12 inches high, puberulent; leaf-blades spatulate, obtuse, glabrous, 4 to 9 lines 

 long, the petioles 1 to 7 lines long; flower whorls quite distinct or remote, or the 

 terminal ones spicately congested; bracts linear or linear-lanceolate, cuspidate, in- 



Fig. 433. Pogogyne douglasii Benth. 

 a, habit, X %; ft, fl., X I'i; c, corolla 

 spread out, X IVa ; d, calyx spread out, X 2. 



