Chrysosplenium.] SAXIFRAGEjE. 



241 



3. M. pentandra ; pentandra, foliis radicalibus cordatis obtuse lobatis crenato-serratis, 

 scapo apliyllo, calyce patente, petalis pectin ato-pinn at ifidis, ovario omnino infero. Hook, 

 in Bat Mag. t 2933. Graham, in Ed, N, Phil. Journ. July^ 1829. — Drummondia mitel- 

 loides. De Cand* Prodr. v. 4. j?. 50. 



Hab. Moist alpine woods in the Rocky Mountains. Drummond, — I can by no means agree with my learned 

 and valued friend, De Candolle, that this should form a g:enus distinct from Mitella dlphylla and M. nuda. In 

 habit, they so entirely correspond, that it would be offering- a violence to nature to separate them. Our plant 

 only differs, generically, in the suppression of the five stamens that are opposite the lohos of the calyx, and in the 

 union of the ovary for nearly its ^vhole length ; which latter circumstance is very variable, as we ha\e 

 shown in the allied genus Heuchera: and the reduced stamens exist equally in the following species, where 

 the ovary is only half inferior ; — there is this difference, however, that while in M. pentandra, the five re- 

 maining stamens are opposite the petals, in M. ^r//?rfa they alternate with them: but even if the present should 

 prove a distinct genus, the name Drummondia was previously established as a genus of Mosses. (Musci 

 Americani. v. 1, 1828, n. 62.) 



4, M, trifida; pentandra, foliis radicalibus cordatis obtuse lobatJs crenatis, scapo aphyllo, 

 calyce campanulato, limbo apice patente, petalis trifidis, ovario semiinfero. (Tab. LXXXIL) 

 — Graham, in Ed, N, Phil. Journ. June, 1829. — M, parviflora. Donglas, MSS. opud 

 Herb. Hort Soc. Land. 



Radix perenms, crassa, fibrosa. FoUa omnia radicalia, longe petiolata, cordato-rotundata, lobata ; lobis 

 brevibus obtusis crenatis, supra pills albis rigidis apprcssis, subtus nuda. Petioli pilis rigidis deflexis i^peri. 

 Scapus spithamreus ad pedalem et ultra, aphylla, nuda vel squama parva una alterave instructa, liacemus 

 subspicutus, gracilis, dcmum eloiigatus. Pedicelll brevissimi, bractea minutissima liueari quandoque suffulti. 

 Calyx campanulatus, parvus, tenuissime pubescens : tubo superne libero 5-fido, laciniis ovatis fere albidis, ad 

 apices patentibus. Stamina ad oram tubi inserta, inclusa, laciniis opposita. Filamenta brevissima. Antherte 

 subo-lohosse. Petala patentia, parva, unguiculata, cuneata, profunde bifida. Ovarium semi-superum : Styli 

 2 breves. Stigmata capitata. Capsula calyce tecta, unilocularis, bivalvis, polysperma ; valvis arete reflexis. 

 Semina nigro-fusca. 



Hab. Alpine rivulets, North of the Smoking River, on the East side of the Rocky Mountains, in lat. 

 oG^f rare. Dnmimond, Plentiful in woody situations on the low ridge of the Blue Mountains of Lewis 

 and Clarke's River, West of the Rocky Mountains, in lat. 46°. Douglas. — This has petals similar to those of 

 Tellima parvijiora. Here, as I have already intimated, the five stamens are opposite to the segments of the 

 calyx: and sometimes they are wholly wanting. Again, in other plants cultivated in the Botanic Garden, 

 the petals were wanting altogether, so that little dependence can be placed on the number of these parts in 

 constructing the generic characters. 



Tab. LXXXII. Mitella trifida. . Fig. 1, Flower; ^^r. 2, Flower laid open; Jig. 3, Section of the germen; 

 fig. 4, Upper and free part of the germen, with the styles and stigmata ; fig. 5, Capsule, burst open 

 and exposing the seeds : — magnified. 



5. CHRYSOSPLENIUM. Tourn. 



Calycis tubus ovario adhserens, limbus 4-5-lobus, lobis obtusis. Stam. 8-10 sepalis 

 alterna oppositaque. Styli 2. Capsida 2-rostra 2-valvis demum unilocularis polysperma. 

 Semina Isevissima fundum versus capsula? luiscentia.— Herbae annuoi? Folia crassiuscuia 

 simplicia petiolata dentata. Flores suhcorymhosi, flavescentes. DC. 



1. C. alternifoliim; foliis alternis renifornii-cordatis crenato-lobatis floribus coryuibosls. 

 ■Linn. Sp. PI p. 569. Bngl Bat. t. 54. Br. in Parrrjs \st Voy. SuppL App. p. cclsxv. 



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