Clarkia. ONAGRACE^. 515 



fistulous stems. Leaves scattered ; the lower ones oblong, unequally pin- 

 nately lobed; tlic upper linear, nearly sessile, few, denticulate. Flowers 

 (rather large) axillary along the virgaie branches: petals white changing to 

 red, evanescent. 



E. Californkus (Nutt. ! niss.) 



California, Douslas! Bushy plains near St. Diogo, California, NiilUill! 

 April. — Stem (about 2 feet high) and branches thick, glabrous, with few 

 scattered leaves. Calyx-segments lanceolate-linear; the extremely short 

 tube lined with an orange-red disk. Petals about half an inch long, rather 

 obtuse. Cajjsules 3 inches or more in length, very narrow, obtusely quad- 

 rangular, strongly refracted ; the valves somewhat membranaceous. — This 

 plant is not noticed in Hooker and Arnott's account of Douglas's Californian 

 collection. It is so remarkably like some Cruciferous plant in appearance, 

 that we were about to describe it under tlie name of Turritopsis, doubting 

 however whether it should not rather form a subgenus of CEnolhera, notwith- 

 standing its peculiar habit. It has been cultivated in the garden of the Lon- 

 don Horticultural Society. 



6. CLARKIA. Pursh,Jl. l.p- 2G0, /. 11. 



Tube of the calyx slightly prolonged beyond the o^■ary, infundibuliform, 

 and, with the 4-parted limb, deciduous. Petals 4, unguiculatc, dilated, 

 3-lobed or entire ; the claw with 2 minute teeth. Stamens 8 ; those opposite 

 the petals shorter: anthers oblong or linear, fixed near the base, revolute 

 after impregnation ; those of the alternate shorter stamens smaller, often de- 

 formed and sterile. Style filiform, surrounded at the base by an annular 

 epigynous disk : stigma with 4 obovate or oval cruciate lobes. Capsule 

 4-sided or somewhat cylindrical, attenuate at the summit, 4-celled, 4-valved. 

 Seeds numerous, ascending, in a single series, obovate, minutely granulose. — 

 Annual herbs (natives of Oregon and California), with opposite or alternate 

 entire or slightly denticulate leaves, more or less pctioled. J'lowers axillary, 

 large, purple or lilac-color, rarely white. 



1. C. pulcJieUa (Pursh) : leaves linear or lanceolate; petals large, broadly 

 cuneiform, tapering into a long claw, which is furnished near the middle with 

 a small refiexed tooth on each side ; the lobes spreading and denticulate ; al- 

 ternate stamens abortive ; tlie perfect ones with a glandular scale at the base 

 of each; lobes of the stigma much dilated, glabrous; capsules pedicelled. — 

 Pursh! I. c; Lindl.f hot. reg. t. 1100; Hook.! bot. mag. t. 2916, Sf Ji. 

 Bor.-Am. 1. p. 2U. 



P. petals less deeply lobed and more denticulate. HooTc. I. c. 

 Dry sandy soil, Oregon ! & Northern California ! towards the Rocky 

 Mountains. — Flowers lilac-purple, sometimes white. Stigma white. 



2. C. elegans (Lindl.) : leaves ovate or ovate-lanceolate, remotely den- 

 ticulate, on short petioles; petals undivided, rhombic or triangular-ovate, 

 with a very slender toothless claw; stamens all fertile, those opi)osile the 

 petals shorter, with a hairy scale at the base of each ; lobes of the stijrma 

 short and hairy; capsules nearly sessile, hairv. — Lindl. ! hot. reg. t. 1575; 

 Don, in Brit. ji. gar d. {ser.2) «. 209 ; Hook.' &f Am.! hot. Beechej/, suppl. 

 p. 340. Phffiostoma Douglasii, Spach, Onagr. p. 74. (excl. syn. C. rhom- 

 boidea.) 



