TARAXIA. ONAGRACE^E. 231 



7 TARAXIA. Nutt. Raimann in Engl. & Prantl Nat. Pfl. Fam. Ill, 216.. 



Acaulescent plant with pinnatifid or entire leaves 

 arid yellow or white axillary flowers. Calyx 4-parted, 

 the tube filiform, longer than the ovary, marcescent or tardily 

 deciduous, Petals 4, deciduous. Stamens 8, erect ; anthers oval 

 or oblong and fixed near the base or linear and fixed near the 

 middle. Style usually adherent to the calyx-tube : stigma capi- 

 tate, entire or rarely 4-toothed Capsule sessile. Seeds some- 

 what ascending, in a double series with a crustaceous testa. 



T. graciliflora Raimann. 1. c. (Enothera gr"dli flora H. & A. Small 

 villous annual : leaves linear. 18-30 lines long acuminate or obtuse attenu- 

 ate or more frequently broad at base, entire or obscurely repand-dentate, 

 ciliate calyx-tube 6-18 lines long; petals 3-5 lines long, yellow changing to 

 greenish in age : capsule compressed-ovate 4-6 lines long coriaceous, tet- 

 ragonal below and 4- winged above the middle, the wings obliquely truncate 

 and hairy: seeds horizontal, smooth. On barren plains and gravelly bars, 

 Southern Oregon and California. 



T. heterantha Small 1. c. (Enothera heterantha Nutt. Glabrous per- 

 ennial : leaves oblong-lanceolate tapering into a slender petiole, acute or 

 acuminate, entire or repand, 2-4 inches long: tube of the calyx much 

 shorter than the leaves, the segments linear-lanceolate; about the length 

 of the broadly obovate retuse petals, anthers oblong, fixed near the base, 

 capsule 9 lines long, o bo void-oblong, tetragonal, attenuate above into the 

 persistent calyx-tube, the sides nearlv flat, ribbed, subreticulated : seeds 

 numerous, minutely pitted. On dry plains, Eastern Oregon and Idaho to 

 Utah and Nevada. 



T. oyata Small 1 c. (E.ovataNutt. Subpubescent perennial leaves ovate 

 to oblong-lanceolate, ciliate. acute, erosely or repandly denticulate, or 

 serrulate, 2-8 inches long: calyx-tube 1-4 inches long: petals yellow, 3-10 

 lines long: capsule 6 lines long, strongly torulose: seeds few, in one or two 

 rows, erect, oval a line long. Jn moist piaces, Southern Oregon to Cali- 

 fornia. 



T. longiflora Nutt. in Herb. (Enothera Nuttallii T. & G. Densely 

 pubescent perennial : leaves lanceolate, 2-6 inches long, petioled, acumi- 

 nate, deeply sinuate-pinnatifid, the numerous very unequal segments often 

 roundish or obtuse : tube of the calyx 12-18 lines long; petals 5-7 lines 

 long usually white : capsule 6-10 lines long, terete, attenuate above into 

 the persistent calyx-tube : seeds numerous, conspicuously pitted. Along 

 streams, eastern Washington to California and Nevada. 



8 SPH/EROSTIGMA F. & M. Ind. Sem. Hort. Petrop. ii, 49. 



Annual or perennial caulescent herbs with entire or pinnatifid 

 leaves and yellow white or rose-color flowers in bracted or leafy 

 spikes. Tube of the calyx obconic or shortly funnel form, much 

 shorter than the ovary ; the limb 4-parted. Petals 4, entire or 

 emarginate. Stamens 8, somewhat unequal, the oblong anthers 

 attached near the middle. Stigma capitate, entire. Capsule 

 linear, sessile, terete or tetragonal, attenuate at the apex, more 

 or less contorted, completely 4-celled. Seeds ascending, in a 

 single row in each cell, ovate to linear-oblong, smooth or nearly 

 so. 



