OP ARTS AND SCIENCES. 263 



the attachment seems to be from "just above the base to the apex" 

 of the body, as Mr, Watson describes it in the account of Palmer's 

 collection (Proc. Am. Acad, xviii. 121). There are indications that, 

 in separating, a minute lacinula of the style is sometimes carried away, 

 as in most of the European species. In Plemsley's description this 

 and the following species are said to be annuals. Our specimens are 

 not decisive in this respect; they appear rather to denote a perennial 

 growth from slender running rootstocks. 



O. CARDIOPHYLLA, Gray, 1. c. Pra3cedenti similis ; pedicellis pie- 

 risque oppositifoliis vel extra-axillaribus, paucis in racemum fere ebrac- 

 teatum digestis ; "corolla alba"; nuculis calycem subjDatentem baud 

 superantibus crassioribus brevi-ovalibus basim versus gynobasi pyrami- 

 data parum elevata adfixis, dorse sursum spectante ala mox retroflexa 

 in dentes elongato-subulatos multipartita circumdato ; cotyledonibus 

 orbiculatis. — Northern Mexico, in mountains near Saltillo, coll. 

 Palmer, 894. — Closely related as this species is to the foregoing, its 

 nutlets in structure, insertion, and all but the tliinner and softer tex- 

 ture, are very much like those of the original Eritrichium. 



§ 2. Eritrichium. {Eritrichium, Schrad. Diss. Asperif., Gaudin, 

 Koch, Reichenb. Ic. Fl. Germ.) Nuculoe dorso sursum oblique spec- 

 tante tantum complanata3, intus carinatae, pericarpio dentibusque sub- 

 cartilagineis. — Amphig;ie£]e, alpinae vel montana?, uanai, perennes. 



* Amphigea alpina et arctica, albo-villosa. 

 0. NANA, cum var. aretioides et var. Chamissonis. Eritrichium 

 nanum, Schrader, cum vars. aretioides et Chamissonis, Herder in 

 Radde ; Gray, Syn. Fl. ii. 190. To the synonymy add the excellent 

 figure, from the European plant, of Hook. f. Bot. Mag. t. 5853, which 

 well exhibits the oblique jwsition of the forming nutlets. 



* * Boreali-Americana, cano-strigosa, nuculis calvis ! 

 O. HoAVARDi. Cynoghssum Hoivardi, Gray, Syn. Fl. ii. 188. 

 Dense ciespitosa, pube sat molli argenteo-incana ; foliis caudiculorum 

 confertissimis lineari-spathulatis, caulium floriferorum brevium lineari- 

 bus sparsis ; cyma aut dichotoma aut simplici racemiformi pauciflora 

 parce bracteata ; sepalis linearibus corolloe cocrulea? lobis paullo brevi- 

 oribus ; nuculis nitidis dorso oblique truncatis exalatis, sed disco dorsali 

 piano ovato acutiusculo angulato-marginato aut lajvi aut minute papu- 

 loso et puberulo. — Rocky Mountains in Montana, Winslow J. Hou-ard, 

 coll. in flower only, about the year 18G6; on Mount St. Helena, Mon- 

 tana, Canby, 1883, with mature fruit; Cascade INIouutains, Washing- 

 ton Terr., Frank Tweedy, 1882, in flower. In Proc. Am. Acad. 



