OF ARTS AND SCIENCES. 55 



this decides me to exclude them from Eritrichium, with which Dr. 

 Torrej combined them. This small perforation is occupied by a lili- 

 form funiculus-like process, which remains attached to the receptacle 

 Avhen the nutlet is detached. The gynobase is flat, merely umbonate 

 at the origin of the short style. 



AxTiPHYTUM HELiOTROPioiDES A. DC. Prodr. 10, p. 122. In 

 Mexico, on the boi'ders of (but not known within) the United States, 

 Berlaudier, coll. no. 2217, 3108. Also Coulter's Mexican collection, 

 no. 1055. No. 75 coll. Xantus, Lower California, referred to this 

 species by me, has neither flowers nor fruit, and is very uncertain. 

 All the plants referred to this species by Torrey, in Bot. Mex. Bound, 

 p. 140, Berlandier's excepted, are very different, namely, Entrichiiim 

 hispidum of Buckley. Alphonse De CandoUe's character is a good one, 

 excejjt that man}^ of the leaves are alternate. The slender pedicels are 

 characteristic. The turgid nutlets have a very large scar, occupying the 

 breadth and almost the lower half of the length of the inner face, flat, 

 bordered by a sharp and thin entire margin, the perforation in its upper 

 part. Stigma somewhat capitate, entire. Crests in throat of corolla 

 conspicuous. 



Antiphytum floribundum. Herbaceum e radice "perenni" vel 

 bienni, erectum, 1-3-pedale, cinereo-hispidum ; foliis fere omnibus alter- 

 nis linearibus ; racemis brevibus paniculatis ; pedicellis calyce 2-o-plo 

 brevioribus, inferioribus bracteatis ; corolla rotato-cam[)anulata calycis 

 5-partiti scgmeuta lineari-lanceolata vix superaute, fiuice prorsus nuda, 

 lobis brevibus rotundatis ; filamentis anthera longioribus ; stiginate 

 bilobo ; nuculis creberrime verrucoso-scabris ventre carinatis, cicatrice 

 parvula circulari immarginata centro perforata. — Eritrichium Jlori- 

 hinidum Torr. Bot. Mex. Bound, p. 140. — Borders of Texas, moun- 

 tains of Puerte de Paysauo and Rock Creek, near the Rio Grande, 

 Bigelow. This accords well in structure with the preceding, except 

 in the total absence of the crests at the throat of the corolla. 



EuiTKiCHiuJi Schrader. The central and western regions of North 

 America abound in species of this genus, and a revision of them was 

 greatly needed. The result of a recent study of them is here ap- 

 pended.* With the exception of the Myosotideous Eueritrichia, the 



» ERITRICHIUM Schrad. et Auct. 



Eritrichium, Plagiobothrys & Krynitzlda (Fisch. & Meyer), DC. Prodr. — 



Piptocahjx Torr. 



§ 1. EuERiTKiCHiUM. (&i'<ncAa(m Scliracl., Koch.) Nuculse gynobasi convexae 

 basi intus oblique affixa, cicatrice brevi ssepius rotunda vel oblonga : semen 



