22 R ANUNCUL ACEiE. ^ [ Caltha. 



8. CALTHA. Lim, 



Cai. coloratus, S-sepalus, sepalis suborbiculatis, petaloideis. Petala 0, Stam. plurima, 

 Ovaria 5-10, CapsttlcB 5-10, compressae, patentes, l-loculares, polyspermae, — Herbae 

 perennesy glaberrimce. DC* 



1. C, palustris ; caule erecto, foliis orbiculatocordatis reniformibusve crenatis, lobis 

 obtusis, sepalis 5-6 ovalibus. — Linn, — Mich. Am. v. 1. p. 324. Pursh, Fl, Am, r. 2, p. 390. 

 BigeL Fl* Bost ed. 2. p, 221. Rich, in Frankl. \st Journ. ed. 2. p. 24,. 



Hab. Throughout Canada, in the plains ; frequent. Lahrador, Mr. Morrison, Coliunbia. Br. Scouler. 



2. C. asarifolia ; caule suberecto unifioro, foliis cordato-reniformibus crenatis, sinu 

 obtusis, sepalis 6-7 ovalibus. — De Cand. Syst. Veget. v. 1. p. 309, Prodr. v, 1. p. 45. 



J 



Hab. Unalaschka, and the Aleutian Isles. Herb. Banks, — Too near, 1 fear, to the C. paltistris, which is - 

 ayowedly a very variable plant. 



3. C.hiflora; caule unifolio bifloro, foliis radicalibus petiolatis reniformibus crenatis, 

 sinu latissimoj sepalis oblongis. — De Cand. Syst. Veget. v. 1. p. 310, Prodr, v. 1. p. 45. 



Hab. Banks' Isles, on the North-West coast of America, Menzies. — I have seen no specimens which 

 exactly accord with this, but it seems to me too nearly allied to the following species. 



4. C. leptosepala ; caule erecto plerumque unifloro, foliis longe petiolatis cordatis 

 crenatis, sepalis 8-10 oblongis. (Tab. X.) — De Cand. Syst. Veget. v. 1. p. 310, Prodr, v. 

 I. p. 45. 



Radix fasciculata, e fibris numerosis, crassiusculis, longis, descendentibus. Caules pabaaares vel spithamaei, 

 erecti. Folia pauca, 4-5, plerumque omnia radicalia, cordato-rotundata, tenui-membranacea, sinu acutius- 

 culo, margine, apice prsecipue, obsolete crenata : Caulina nxilla vel solitaria, radicalibus similia sed minora. 

 PetioH 2-3 uncias longi, basi membranaceo-vag^nata. Flores solitarii, vel saepissime bini in singulo caule. 

 Sepala 8-10, elllptico-oblonga, alba, extus subcairulea, siccitate sordide-lutea, reticulatim nervosa. Stamina 

 numerosa, pistillis longiora. PistUla 8-10, erecta: Germen oblongum: Sh/lo subnullo: Stigmate obtusa 

 recurvo. 



Hab. North-West coast of America. Menzies. Alpine swamps in the Rocky Moimtains, between lat 

 52° and Sb°. Drummond, 



Tab. X. Fiff. 1, 2, Caltha leptosepala :—nat. size ; Jig. 3, Petal ; Jig. 4, Stamen ; jig, 5, Pistils ; Jig. 6, 

 Single pistil: — magnified. 



5. C. natans; caule procumbente natante, foliis cordato-reniformibus crenatis, lobis 

 subapproximatis postice obsolete crenatis antice dentatis, sepalis ovalibus, capsulis rostro 

 recto. DC.—'' Pall. It ed. min. 3. p. 248." Gmcl. Fl. Sib. v. 4, p. 192. t. 82, 



Hab. Creeping on the surface of deep sphagnous bogs, in the woody central districts from Canada to lat. 

 600; rare. Dr. mchardson. Drummond.— Vlowers of nearly a pure white, according to Dr. Richardson, and 

 less than half the aze of Cpalustris. The specimens of this in the Herbarium are very imperfect, and I 

 must confess that it appears to me an obscure species; indeed the greater number of species in this genus 

 are but imperfectly characterized. 



6. C. arctica; caule repente, foliis reniformibus crenato-repandis obtusis, folliculis 

 (12-16) imbricatis, stigmate persistente adnato apice recurvo, antheris linearibus viginti 

 ^\\xx\h\x%.— Brown in Parn/s \st Voy. App, p. cclxv. 



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