CEnothkra. ONAGRACE/E. 507 



tlie funnel-shaped summit rather shorter than the segments. The whole 

 calyx is marcescent-persistent for a considerable period, but apparently less 

 so than in the ])receding species, where it is entirely persistent until the ralvx 

 is almost mature. On account of this remarkable peculiarity, Mr. Nuitall 

 proposes these two plants as a new genus (Taraxia; in allusion to the re- 

 semblance wliich their leaves bear to those of Lcontodon Taraxacum), and 

 perha})s very justly ; but the flowers and fruit agree so nearly in structure with 

 the succeeding section (in which the calyx-tube is more or less marces- 

 cent) that we are unwilling to separate them, especially since the present 

 species is somewhat intermediate. The persistent calyx is certainly a very 

 remarkable character in this liunily. 



§ 8. Stigma capitate or subclavale: tube of the calyx filiform, very long {tar- 

 dily deciduous), slightly dilated at the summit : stamens erect ; the alternate 

 filaments usually shorter: anthers oblong and fixed near the base, or linear, 

 fixed near the middle, and versatile: capsules (radical) sessile, short: acau- 

 lescent : flowers {rather small) yellow. — Primulopsis. 



* Perennial: fiowers bright yellow, unchanged in fading : leaves oblong, 

 lanceolate, denticulate, petioled. (Heterostemon, Nult., not of Wight ^ Arn.) 



47. CE. heterantha (Nutt.) : stemless, glabrous ; leaves oblong-lanceolate, 

 tapering into a slender petiole, the margin repand or nearly entire ; tube of the 

 calyx much shorter than the leaves ; the segments linear-lanceolate, about 

 the length of the broadly obovate retuse petals ; alternate stamens much 

 shortest ; anthers oblong, fixed near the base ; " capsules ovate-elliptic, 

 pointed, smooth" {Nutt.); stigma large. — Xutt. .' in jour. acad. Philad.7. 

 p. 22. Jussiaea acaulis, Pursh ! fl. i~ p. 304 (locality doubtful). 



Dry plains, sources of the Oregon, Mr. Wyeth ! "June. — Leaves resem- 

 bling those of Primula lanccolata, attenuate at each end. Tube of the calyx 

 about 2 inches long. Petals rather smaller than in CE. ovata. — We have 

 not seen the fruit. 



48. CE. ocata (Nutt. ! mss.) : stemless, pubescent ; leaves ovate or oblong, 

 erose-denticulatc, tapering into a slender petiole ; tube of the calyx nearly as 

 long as the leaves ; the segments oblong-lanccolate, shorter than the roiand- 

 ish entire petals; stamens almost eciual; anthers linear, nearly as long as 

 the filaments, fixed near the middle ; stigma small, somewha.t clavate. 



" In moist plains in the immediate vicinity of Monterey, California : 

 comnwn. March. — Leaves almost exactly those of Viola primulasfolia. 

 Flowers bright yellow, about an inch in diameter. Ovaries radical, obtuse : 

 the capsules unknown. Stigma somewhat clavate. Nutt. — Mr. Nuttall 

 justly remarks, that the present plant shows the insertion of the anthers and 

 the relative length of the filaments t-o be of less consequence in this genus 

 than has been supposed. 



• • Annual : flowers yellow, turning to green in fading : leaves spatulate. 



linear, sessile. 



49. CE. graciliflora (Hook. & Arn.) : stemless, very hairy : leaves linear, 

 tapering towards the base, mostly entire ; tube of the calvx ra'ther shorter than 

 the leaves ; the segments much shorter than the broadly obcordate petals ; 

 alternate stamens shorter ; anthers oval, fixed near the base ; ovary ovate, 

 4-angled. — Hook, i^ Arn. .' hot. Beechey, suppl. p. 341. 



