Gaura. ONAGRACE^. 519 



Arkansas! to the plains of tlie Saskatcliawan ! and to (ho Rorky Moun- 

 tains! y. On tlie Canadian, Dr. ./t//H^.v / i'. On lliu Saskatcliawan, Drum- 

 ■niond ! — This species has a more nortliern raniie even than G. biennis. The 

 (i. glabra, Ltlim. appears to us merely a glabrous form, and G. parvifolia, 

 Torr. a small-leaved state, of this .K])ecies. Stems fi-l'-' inches high. Leaves 

 small. Flowers rose-color turning to scarlet. Tiiix- of the calyx much 

 longer than the ovary. Fruit small. — Perhaps not suflieiently distinct from 

 G. epilobioides. 



-/— 7. G. Iripctala (Cav.) : stem erect, fasligiately branched above, somewhat 

 hirsute, leafy; leaves lanceolate, the radical ones spatulate-lanceolate and on 

 long petioles, repand or denticulate, acute, clothed with api)ressed pubes- 

 cence ; spikes slender ; brads carinate, longer tiian the ovaries ; segments of 

 the calyx and ])etals usually .3 ; the segments about the lengih of the tube, 

 longer "than the spatulate-oblong jielals ; stamens mostly 6; fruit closcdy ses- 

 sile, triipietrous (rarely 4-angied), the sides 1-ribbed and plicate-rugose. 

 Spach.—Cav. ic. 4. j;."66, I. 39(j, /. 1 ; DC. I. c ; i<2^ach, Onagr. p. 56. 

 G. hexandra, Ortega. 



Texas, Drummond, fide Spach. — We have not seen this species, and the 

 description given above is condensed from JNIr. Spach's Monograph. 



8. G. JDrummondii : stem suffruticose at the base, a little hairy below, 

 virgately branched above ; leaves somewhat canescently puberulent, lanceo- 

 late, acute, denticulate or somewhat sinuate; spikes slender, few and loosely- 

 flowered ; bracts ovate, caducous, about the length of -the ovary ; tube of the 

 calyx about the lengih of the segments and rather shorter than the ovary ; 

 petals spatulate-oblong ; fruit sessile, very abruptly narrowed at the base 

 and terete wlien mature, ovate-pyramidal abo^•e, acute, with 4 strong carinate 

 angles. — Schizocarva Drummondii, Spach ! Onagr. j^. 62 (v. sp. in hcrh. 

 Webb.) ' ^ 



Texas, Drummond ! — There are apparently several forms of lliis species in 

 Drummond's collection : the fruit does not assume its peculiar form until it 

 is nearly mature. None of our specimens have sessile spikes, and in some 

 other respects they do not wholly agree with Mr. Spach's detailed de- 

 scription. 



9. G. parvijlora {'Dou^\.): stem tall, erect, and, with the margin of the 

 . leaves, villous with very soft white hairs ; leaves ovate-lanceolate, acute or 



acuminate, repand-denticulate, clothed with a very short velvety pubescence 

 on both sides ; spikes virgate, strict, very many-flowered, much elongated in 

 fruit; bracts lanceolate-subulate ; flowers very small ; tube of the calyx shorter 

 than the glabrous ovary and longer than the segments ; fruit sessile, oblong- 

 clavate, 4-nerved, slightly 4-angled (between the nerves) at the apex. — 

 Lehm. .' in Hook. fi. Bor.'-Am. 1 . ]>. 208, S^' sfirp. pug. 2. p. 58. G. mollis, 

 Nutt. ! ined. ; Torr. I in ann. hjc. New York, 2. p. 200 ; not of H. B. (^' K. 

 Schizocarya micrantha, Spach ! Onagr. p. (i2. 



Arkansas to the sources of the Platte, Nutlall! Dr. James ! and on the 

 Wallawallali, Oregon, Douglas! Texas, Drummond ! and near New Or- 

 leans, Dr. Ingalls ! — Stem somewhat branched, 2-5 feet high, clothed, 

 besides the long hairs, with a minute slightly glandular pubescence. Leaves 

 1-3 inches long ; those at the base of the spikes small. Spikes dense, in 

 fruit often a foot or more long. Petals spatulate-oblong, scarcely unguicu- 

 late, shorter than the calvx-segments, rose-color. Anthers oval. Lobes of 

 the stigma very short. Fruit 3-4 lines long, obtuse when fully grown, and 

 with 4 inconspicuous angles at the summit, nearly terete towards the base, 

 about 2-seeded. — In the most mature fruit we perceive no disjiositiiMi to be 

 dehiscent at the apex. Tliis species has a considerable geographical rauge, 

 and was first described from imperfect specimens. 



