256 SAXIFRAGES. [Leptarrhcna. 



simis, in a manner that tv'IU be better underetood by a reference to the nia^iiilled ilg-ure, than by a description. 

 In ren^ard to fructification, this pbint "wdll hold a middle rank betiveen Saxifraga and tlie foHoAving gentis, 

 Leptarrhena; differing from the former in its free ovaries (connected only by an external woolly substance) 

 and in the arillated seeds, — from the latter, in the two-celled anthers, tlie diciduous styles, the pendant seeds; 

 and from both, in the number of stamens and carpels. It is from the copious woolly substance, connectiiifT 

 the carpels, that we derive the generic name. 



Tab. LXXXVIII. E. pectinata. Fig, 1, A flower and bractea;^^. 2, Flower fully expanded; Jig. 3, 

 Ovaries; Jig, 4, Ovary laid open to shew the Insertion of the ovules; Jig. 5, Cluster of carpels yjig. G, 

 Single carpel ; Jig, 7, Seed with its ai-illus ; Jig, 8, Seed or nucleus taken from the arillus ; Jig. 9, Section 

 of do. showing the embryo ; Jig. 10, Leaf: — all more or less magnijied, 



8. LEPTARRHENA. Br. 



Calyx campanulatus brevis quinquefidus, tubo lato. Stamina decern ad orem tubi inserta. 

 Antherce uniloculares bivalves. Petala quinque lineares, PistiUa duo, libera, in stylum 

 brevem persistentem attenuata. Stigma obtusum. Carpella duo, intus longitudinallter . 

 dehiscentia. Semlna scobiformia ad margineni versus basin valvarum inserta, erecta. — 



Herbse hahitufere Pyrolae locisfrtgidis Americm borealis. Scapus nudus. Flores racemoso- 

 paniculati. Folia coriacea perennantes Integra grosse serrata, petiolis latis vaghiantibiis, 



1. L.pyrolifoUa; (Tab. LXXXIX.) Br. in Parry's \st Voy. Suppl.p, cclxxiii. Serlnge^ 

 in De Cand. Prodr. v. 4. p, 48. — L. amplexifolia. Seringe, in De Cand. Prodr. v. 4. p, 48. — 

 Saxifraga pyrolifolia. Don, Saxifr, in Linn. Trans, v. 13. p. 389.- — S. amplexifolia. Sternh. 

 Rev, Saxifr. SuppL p. 2. t. 2. — S. micrantha et S. coriacea. Fischer MSS. (fide Seringe,) 



Radix perennis, subfusiformis, elongatus, fibrosus. Caulis brevis, ascendens, simplex vel ad basin ramosus, 

 dnas ad tres uncias longus foliosus, petiolis membranaceis latis omnino tectus. Folia elliptica, obtusa, coriacea, 

 plana, duplicato-s errata, nervosa, nervis obliquis, supra nitida vlridia, subtas pallida. Petioli subunciara lon'ri, 

 iusiguiter dilatati, canaliculati, subciliati, membranacei, vaginati. Scapus spithameus ad pedalem et ultra, 

 erectus, rigidus, foliis pai'vis vel squamis duabus oblougis serratis instructus, pubescens superne prtecipue. 

 Racemus compositus, subcorymboso-paniculatus. Flores parvi, inconspicui. Calyx profiindc quinquefidus, 

 pubescens : Tubus brevis, segmentis oblongis, obtusis, erecto-patentibus. Petala linearia, obtusa, vix calycem 

 superantia. Stamina decem longitudine petalorum, quinque petalis et quinque segmentis calycinis opposita, 

 distincta. Filamenta subulata. Antherce subgloboso-tetragon^, dorso afi&xse, uniloculares, bivalves, PistiUa 

 2, distincta, libera. Germen ovatum, uniloculare, pluri-ovulatum, ovulis lineari-elongatis, erectis prope 

 basin ad marginem valvarum insertis. Styli attenuati, subdivergentes. Stigmata obtusa. Carpella 2, 

 oblongo-ovata, stylis attenuatis terminata, intus longitudinaliter dehiscentia. Semina non vidimus, sed, (fide 

 111. Brown,) scobiformia, testa utriuque ultra nucleum ovalem elongata, subulata. 



■ 



ILvB. Unalaschka. (Z>fli;iV/iVe^'o;i m/Jeri. Ranks.) Chamisso. Behring's Strait. Menziesin Herb, nostr. 



" Height of Land" on the West side of the Rocky Mountains, in lat. 52^. Unimmond. The accurate Mr. 



Brown distinguished this plant as a genus, in his valuable paper on the plants of Melville Island above 

 quoted; and its habit as well as fructification, amply justify him in so doing. We rcn-et that we have not 

 seen perfect seeds. Our specimens from Chamisso and Mr. Menzies are in flower, and the only fertile one 

 from Mr. Drummond, though in fi-uit, has shed its seeds. 



Tab. LXXXIX. L. pyrolifolia. Fig. 1, Flower; ^^7. 2, Back view of a stamen;/^. 3, Front view of 

 do. ; Jig. 4, Pistil; Jig. 5, A pistil biid open to show the insertion of the ovules; Jig. 6, Ovule ; Jig. 7, 

 Carpels surrounded by the persistent floral coverings : — magnijied. 



