CATALOGUE. 247 



ale. Figs. 11, 12. Achenium from Asiatic specimen of E. Redowshii. Figs. 

 13, 14. Achenium of E. patulwn ; all enlarged eight diameters. (861.) 



Var. STEiCTUM. (E. strictum, Nees., App. Neuwied^s Trav. 17 ; not of 

 Ledebour.) The prickles united over the back into a strongly inflexed 

 border. — An extreme state, but various intermediate forms are frequent. 

 New Mexico to Colorado and westward. Valleys and foot-hills of Western 

 Nevada, with the last. (862.) 



CoLDENiA^ HisPiDissiMA, Gray. Proc. Amer. Acad. 5. 340. {Eddya, 

 Torr. Fac. R. R. Rep. 2. 170, t. 8.) Prostrate, much-branched, very hispid ; 

 branches 3-10' long, from a woody base ; leaves 3-5" long, linear, entire, 

 revolute, acute, somewhat fascicled at the ends of the short branchlets, hispid 

 with rigid white hairs ; flowers solitary ; calyx deeply 5-parted, lobes linear, 

 tube indurated in fruit ; corolla white, 2-3" long, salver-form, without scales ; 



' COLDENIA, L. (Including Stegnocarpus, Torr., Eddya, Torr., Tiguilia, Pers., and Galapagoa, Hook.) 

 Calyx 5-parted or 5-cleft. Corolla funnelform, lobes subrounded, flat and spreading, tliroat naked. Sta- 

 mens 5. Style bifid or 2-parted, short or elongated. Nutlets 4, coherent into a globose or 4-lobed fruit, 

 at length separable, or more or less distinct. Albumen none or thin ; embryo straight, or the rounded or 

 ovate entire or 3-parted cotyledons incumbent upon the ascending radicle. — Shrubs or herbs, with alter- 

 nate leaves and small sessile usually axillary ilowers. 



Dr. Gray (in Froc. Amer. Acad. 5. 340) has proposed the following arrangement of the species that 

 have been referred to this genus : — 



I. Fruit of 4 triangular nutlets, convex upon the back and closely united by their flat inner sur- 

 faces, thick and orustaceous. 



§ 1. EucoLDBNiA, DC. Styles 3, short; fruit 4-lobed-globose ; nutlets subconnate in pairs, at 

 length separable. C. procumbbns, L. Southern Asia. 



§2. Stegnocarpus, DC. Style 2-cleft; fruit globose, separating into 4 nutlets. C. caiolscens, DC. 

 {Stegnocarpus, Torr. Pac. R. E. Hep. 2. 169, t. 7.) Northern Mexico and New Mexico. 



II. Fruit deeply 4-lobed, the 4 nutlets (or fewer by abortion) ovate, small, attached only to the 

 style by the inner angle, the pericarp thin. 



§ 3. Eddya, Torr. Style bifid toward the top ; nutlets rough-papillose, with a thin crustaceous 

 pericarp. C. hispidissima. Gray. 



§ 4. TiQuiLlA, Pers. Style 2-cleft or divided ; nutlets smooth, shining, with a very thin crusta- 

 ceous pericarp ; embryo with flat entire cotyledons, as in the preceding sections. Species three, all 

 South American. 



5 5. TiQUiLiOPSis, Gray. CoroUa-tube with 5 scales at the base ; pericarp almost membranous ; 

 cotyledons 2-parted, accumbent to each side of the radicle ; otherwise as in the last. C Nuttallii, Hook 



Another species has recently been added to the last section on account of its likeness in habit to 

 C. Nuttallii, but without a knowledge of its fruit. The fuller description here given shows that it differs 

 considerably from them all. The true relations of these rather heterogeneous species are not certain, but 

 it would ^eem that all the latter division should rather be referred to the tribe JBorragew than to the Beli- 

 oiropem, as was long ago stated by Dr. Torrey. 



C. Paimeri, Gray. Froc. Amer. Acad. 8. 292. {nquilia irevifolki, Var. plimta, Torr. Bot. Mex. 

 Bound. 136.) Shrubby, much-branched and spreading, 1° high, hoary with a short dense soft appressed 

 pubescence without hirsute hairs ; leaves 2-3" long, ovate, about equaling the petiole, thickly plicate- 

 nerved ; calyx short, 5-cleft, the ovate or lanceolate lobes about equaling the tube ; coroUa white, 3" or 

 more in length, the tube twice exceeding the calyx, without scales at the base ; stamens included, the 

 unequal dilated filaments inserted at the base of the tube and adnate nearly their whole length ; style as 

 long as the corolla or exserted, very deeply cleft ; fruit maturing but a single obovate-globose smooth 

 nutlet, attached at the base and without ventral sulcus ; albumen evident ; cotyledons rounded, flat, 

 entire, incumbent upon the shorter radicle.— Southern California, (Sohott ;) Arizona, (Palmer.) 



