OP ARTS AND SCIENCES. 57 



Astragalus humtllimus. Caespitoso-depressus, condensatus ; 

 caudice lignescente ; caulibus vix polli<;anbus stipulis scariosis coalitis 

 imbricato-tectis petiolis persistentibus hystricosis ; foliolis 3-5-jugis 

 oblongis canescentibus mai'jjine revolutis liiieain lon^is demiini de- 

 cidiiis ; pedum-ulis brevibus 1-3-flons ; calycis deiitibus subulads tubo 

 oblongo-campanulato dimidio brevioribus; corolla pallida: k^guraine 

 ovato coriaceo albido-pubescente parvo (liii. 2 loiigo) uniloculari 

 9-ovulato fere moiiosperuio, siituris extus promiuulis. — Flat rocky 

 grounds on the jMesa Verde, S. W. Colorado, T. S. Brandcgee, in 

 Hayden's Expedition, 1875. Habit of A.jejimns, AVatson, but much 

 more dwarf and condensed, not rising moie than 2 or 3 inches 

 above the ground, and often choked in drifting sand. Persistent 

 petioles and rhachis only an inch long, more rigid and spinescent 

 than those of A. Jejunus, which are also persistent : the jjod decidedly 

 different. 



Lespedeza leptostachya, Engelm. in herb. Gray. Pube undique 

 adpressa argenteo-canescens ; petiolo j)etiolulo terminali longiore ; 

 foliolis linearibus ; spicis paniculatis gracilibus sublaxifloris longiuscule 

 pedunculatis ; legumine calycem adsequante vel subsuperante. — Min- 

 nesota, T.J. Hale. Illinois, Bebb. Iowa, T. C. Arthur, Bessey. Has 

 passed for L. angusti folia, from which its slender s()ikes and paniculate 

 habit at once distinguish it. Our species of the group are dilficult and 

 need revision, witii very ample materials to be studied with the atten- 

 tion which Maxiraowicz has bestowed upon the Asiatic species. L. 

 capitafa, Michx., should be known by its very short petioles, short- 

 peduncled and globular heads of flowers, and legume much shorter 

 than the calyx ; L. angusfifolia. Ell., by smaller and often oblong 

 heads, on distinct ami sometimes slender peduncles, and legumes hardly 

 shorter than the calyx, the leaflets linear ; L. kirta, by pubescence 

 of stem perhaps always spreading, leaflets from orbicular to narrow 

 oblong, petioles mostly slender, oblong spikes on elongated peduncles, 

 and legume at maturity hardly shorter than the cnlyx. 



Epilobium jucundum. E. paniculato affine ; floribus multo majori- 

 bus thyrsoideo-paniculatis ; calycis tubo ultra ovarium longe producto 

 tubuloso-infundibuliformi ; petalis Isete purpureis late obcordatis semi- 

 pollicaribus ; antheris fere linearibus ; stylo prrelongo. — Scott Valley, 

 Siskij'ou Co., California, E. L. Greene, Aug. 28, 1876. A showy 

 species, well worthy of cultivation, having llowers almost as large as 

 those of E. obcordaium, and very numerous in a rather crowded pani- 

 cle. The calyx beyond the ovary is half an inch long, more narrowly 

 funuel-form thau in E. paniculatum, the tubular part about equalling 



