182 BORRAGINACE^I. Coldenia. 



C. Greggii, Gray. Suffruticulose, a foot or two high, tomentose-canescent : ldaves ovate 

 or oval (2 to 4 lines long], short-petioled, almost veinless, entire, the margins revolute : 

 flowers capitate-glomerate at the summit of the branches : calyx-lobes filiform from a 

 broader base, elongated-plumose with long villous hairs : ovary obscurely 4-lobed ; but the 

 fruit even, ovate-oblong, by abortion 1-celled and 1-seeded, the walls comparatively thin 

 showing mere vestiges of three abortive cells : embryo straight. — Ptilocalyx Greggii, Torr. 

 1. c. 170, t. 8. — Rocky ravines, New Mexico, and south-western borders of Texas, Gregg, 

 Wright, &c. (Adjacent Mex.) 



§ 2. Eddya, Gray. Fruit deeply 4-lobed ; the mature uutlets rounded and ' 

 only ventrally united, thin-walled but crustaceous, rough-granulate: corolla not 

 appendaged : stamens unequally inserted : narrow leaves with very thick midrib, 

 veinless. — Eddya, Torr. 1. c. 



C. hispidissima, Gray, 1. c. Suffruticulose, diffuse, soon procumbent, a, span or two 

 high, very setose-hispid, and with some minute cinereous pubescence : leaves fascicled, 

 rigid, lanceolate, soon linear or acerose by strong revolution of the margins, dilated at 

 base ; the lower or primary ones petioled : flowers scattered : calyx-lobes linear, resembling 

 the leaves i embryo straight. — Eddya hispidissima, Torr. I.e. 170, t. 9. — Dry hills, &c, 

 W. Texas ( Wright, &c.) to Arizona and S. Utah. 



§ 8. Tiquilia, DC. Fruit deeply 4-lobed (or by abortion occasionally fewer) ; 

 the thin-walled nutlets rounded and united only at the centre, smooth and shining : 

 stamens equally inserted : leaves entire, petioled, veined. — Tiquilia, Pers. Gala- 

 pagoa, Hook. f. — In our species (§ Tiquiliopsis, Gray, 1. c), the corolla is appen- 

 daged within, and the cotyledons either 4-parted around or incumbent upon the 

 radicle. 



C. Nuttallii, Hook. Prostrate annual, repeatedly and divergently dichotomous, canes- 

 cently pubescent, also sparsely hirsute or hispid : leaves ovate or rhomboid-rotund, 2 to 4 

 lines long and on longer petiofes, witli two or at most three pairs of strong and somewhat 

 curving veins, and margins somewhat revolute : flowers densely clustered in the forks and 

 at the ends of the naked branches : calyx-lobes linear, sparsely hispid, equalling the tube 

 of the pink or whitish corolla : filaments shorter than the anthers, inserted nearly in the 

 throat of the corolla, the tube of which bears 5 short obtuse scales near the base : nutlets 

 oblong-ovate, marked with a linear and rhaphe-like ventral scar : embryo straight : cotyle- 

 dons very deeply horseshoe-form, their elongated bases almost enclosing the radicle. — Kew 

 Jour. Bot. iii. 296; Watson, Bot. King, 248; Gray, Bot. Calif, i. 520. Tiquilia brevifolia, 

 Nutt. ; Torr. Bot. Mex. Bound. 136, & Wilkes Exped. xvii. 417, t. 12, under the name of 

 T. Ore.gana. — Arid plains, Arizona through Utah and E. California to Wyoming and 

 Washington Terr. 



C. Palmeri, Gray. Apparently perennial or even suffruticulose at base, less prostrate, 

 more canescent but not hispid or even hirsute : leaves obovate or ovate, about the length 

 of their petiole, plicate-lineate by about 6 pairs of straight and strong veins : flowers fewer 

 in the clusters : calyx less deeply cleft ; the lanceolate lobes about half the length of the 

 bluish corolla, which bears 5 salient plates above the base of the tube, extending to the 

 insertion of the slender filaments : nutlets only one or two maturing, globular, with an 

 orbicular scar : cotyledons very thick, somewhat hemispherical, not even cordate, incum- 

 bent on the radicle. — Proc. Am. Acad. vii. 292, & x. 49 ; Watson, 1. c. Tiquilia brevifolia, 

 var. plicata, Torr. Bot. Mex. Bound. 136. — Sandhills on the Mohave and Colorado, 

 E. California and W. Arizona, Emory, Schott, Cooper, Palmer. 



5. TOURNEFORTIA, L. (Joseph Pitton de Tournefort, of France, the 

 great botanist of the 17th century.) — -Shrubby, arborescent, or rarely nearly 

 herbaceous plants ; a rather large genus all round the world in and near the 

 tropics, one or two extratropical. Flowers white, small, unilateral and as it were 

 spicate on the scorpioid cyme-branches, usually destitute of bracts. A polymor- 

 phous and artificial genus, in a few species too nearly approaching the next. 



