236 SAXIFRAGEiE. [Heuchtra. 



A 



1. H. micrantha; scapo iiiferne petiolisque pills longis paten tibus fulvls villosissimis, foliis 

 subrotuado-cordatis obtuse lobatis mucronato-crenatis nudiusculis, bracteis infimis foliosis 

 incisis superioribus setaceis, panicula laxa, petalis linearibus staminibus longe exsertis duplo 

 brevioribus. Douglas^ in BoL Reg, t, 1302. 



Ruj. North-West coast of America. Br, Scolder. Steep rocky baaks of the Columbia, near the Grand 

 Kapidri. Douglas. 



2. H, villosa; scapo inferne petiolisque pilis mollibus deflexis villosissimis, foliis cordatis 

 acute lobatis mucronato-serratis subincisisque supra nudiusculis subtus ad nerves prge- 

 cipue villosissimis, panicula laxa, pedunculis capillaribus dicliotomis, bracteis linearibus 

 ciliatis, floribus pusillis, petalis longissimis angustissime spathulatis staminibusque longe 

 exsertis. — Mich. Am. v. 1. p. 172. Pursh, FL Am. v, I. p. 188. De Cand. Prodr. v. 4. 

 p. 52. 



Hab. Upper Canada. 3Ir. GoJdie. — The leaves of this are very different from those of H. Americana; 

 the JlowerSy too, are smaller, and the petals singularly long and narrow, their upper or broader part becoming 

 spirally twisted iu the dried state. 



3. H. glabra; scapo folioso, foliis cordatis acute lobatis glabris inaequaliter acute serratis, 

 supremis seu bracteis inferioribus incisis, panicula laxa, floribus parvis, calycibus pubescenti- 

 scabriusculis, petalis linearibus staminibus exsertis subduplo brevioribus. (Tab. LXXIX.) 

 TVilld. in Sc/adtes, Syst. VegeL v. 6. p. 216. De Cand, Prodr. v, 4. p. 52. — Tiarella colorans. 

 Graham^ in Ed. N. Phil. Journ. July, 1829. 



Radix perennis, elongata, obliqua, reliquis petiolorum vetustorum vestita. FoHa radicalia longe 

 petiolata, cordata, fere omnino glabra, acute lobata, acuteque insequaliter serrata, serraturis nunc basi 

 dilatatls; caulina seu scapi brcviter petiolata, superior a varie incisa. PetioU graciles, basi stipulatij stipulm 

 adnatae, ut in genere RoscBy apicibus liberis acuminatis ciliatis. Scapus seu CauUs spithamaeus ad pedalem 

 et ultra, t^laber, supeme panicnlatus. Panicnlalaxa. Pediincyli gracileSj patentes, dichotomi, rarais divaricatis, 

 bracteatis, bracteis lineari-subulatis. Flores parvi, minute pubescenti-scabri. Calj/x turbinatus; tubus fere 

 omnino basi germinis adherens, limbo quiuquefido erccto, laciniis oblongo-OTalibus obtusis in^qualibus. 

 Corolla 5-petala. Petala parva, alba, liueaiia vel lineari-spathulata inaequaUa, lobis calyciuis altemantia 

 lis subduplo longiora. Stamina 5 lobis opposita, triploque longiora erecta. Anther<B subrotundatie, 

 loculis ad margines dehisrentibus. Germen apice liberum, stylis 2 atteuuatis, primam cohserentibus 

 demum liberis subdivergentibus : Stigmata capitata. Capsula recurvata, oblonga, membrauacea, stylis duobus 

 persisteutibus termiuata, inferne calyce persistente ampliato tecta, unilocularls, inter stylos dehiscens. 

 Receptacula 2 opposita, brevia, parjetalia seminibiis plurimis gerentia. Semina oblongo-elliptica, intense 

 fusca, lineatim punctata. 



Hab. North-\yest coast of America. {Pallas.) Nootka. (De Cand,) In the vicinity of the Columbia 

 River. Dr. Scouler. Douglas. Rocky Mountains, at Providence and Portage Rivers, in lat. 54°, North. 

 Drummond. — I have referred this to the IJ. glabra of Willd., which appears to come from the same country, 

 and which differs, according to the shoi-t cliai-acter given, only in the "panicula simplex" which is probably 

 the case with small or starved specimens. 



T.ui. LXXIX. Heuchera glabra. Fig, 1, Flower; ^<?. 2, The same laid open j ^57. 3, Capsule, ^^. 4, 

 Section of do. ; Jiff. 5, Seeds '.—magnified. 



4. H. cyUndrica ; scapo omnino nudo petiolisque patentim liirsutis, foliis cordatis alte 

 rotundato-lobatis crenatis ciliatis dentibus piliferis basi truncata supra glabriusculis subtus 



