TARAXIA. ONAGRaCE^. 231 



7 TAEAXIA. Nutt. Baimann 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 oapi-, 

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

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



T. gracillflora Ea,imarin. 1. c. fEnqthera grncilifiora H. t& 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 caiyx-tube 6-18 lines long; petals .3-5 lines long, yellow changing to, 

 greenish in age : capsule compressed-ovate 4-6 lines long -coriaiceou^, 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 Nuti. Glabrous per- 

 ennial: leaves oblong-lanceolate tapering into a ^lender 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, obovoid-oblong, tetragonal, attenuate above into the 

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

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

 Utah and ^'evada. 



T. orata Small 1 c. CE.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. J n moist places, Southern Oregon to Cali- 

 fornia. 



T. Ibngiflora Nutt. in Herb. (Enothera NuttallU T. & G. Densely 

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

 nate, deeply sinuate-pinnatifld, 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.aCEOSTIGMA F. & M. Ind. Sem. Hort. Petrop. li, 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 

 em<ar,ginate. Stamens 8, somewhat unequal, the oblong anthers 

 attached near the middle. Stigma capitate, entire. Capsule 

 li.iear, 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. 



