112 KEY AND FLORA 



h. E. panicula'tum Nutt. Annual, with slender stems branching 

 widely above, low or 10 ft. high. Leaves small, often in clusters on 

 the main stem, almost wanting on the branches. Flowers small, 

 rose-color, veined with darker lines, terminating the slender thread- 

 like branches. Petals deeply notched, nearly twice as long as the 

 calyx lobes. This is common, and blooms in the fall. Widely 

 distributed. 



c. E. adenocaulon Hausskn. Stems ascending, tall, with the 

 inflorescence branched. Leaves ovate-lanceolate, with rounded base, 

 finely toothed margins, and short-winged petioles. Flowers small, 

 rose-color, nodding at first. Inflorescence and seed-])ods glandular 

 pubescent. This is common and widely distributed. It grows near 

 wet places. Little rosettes of leaves appear late in the season at the 

 base of the stem. 



m. CENOTHE'RA, Evening Primrose 



Herbs with alternate leaves. Flowers various, with calyx 

 tube prolonged above the ovary, and the lobes reflexed, often 

 remaining somewhat united. Petals 4, white or yellow, turn- 

 ing reddish or, in some yellow-flowered species, greenish. 

 Stamens 8, with anthers versatile. Stigma either with 4 

 linear divisions or capitate. The following are the most 

 widely distributed species. 



a. (E. Califor'nica Watson. White Evening Primrose. Peren- 

 nials, with low, rather stout stems covered with white, shining 

 epidermis. Flowers axillary, with petals white, obcordate, more than 

 an inch long. Style 4-cleft. Capsules 2 in. long, slightly tapering. 

 Central and southern California. 



b. (E. bien'nis L. Yellow Evening Primrose. Stem erect, 

 often 3 ft. high, leafy. Flowers large (often more than 2 in. in diam- 

 eter), yellow, in a leafy spike. Stigmas with 4 linear lobes. This 

 is generally found in moist places. There are several varieties, 

 differing chiefly in the amount of pubescence and the size of. the 

 flowers. Widely distributed. 



c. (E. gauraeflo'ra T. & G. Xodding Evening Primrose. Stems 

 leafy, simple or branched from the base. Flowers rather small {not 

 ^ in. in diameter), very numerous, ivhite, turning rose-color, in a noddi7ig 

 spike. Capsules slender, linear, much contorted. This is common 

 in the San Joaquin Valley on the sides of hills or gulches. 



d. (E. ova'ta Nutt. Sun Cups (incorrectly called Cowslips). 

 Low, tcith leaves and flowers from a feshy 7'oot forming rosettes on the 

 ground. Leaves broadly lance-shaped, with the margins generally 

 toothed or wavy, 3-8 in. long, often the midvein red. Calyx tube 



