Rhododendron.] ERICE^E. 



43 



« % 



Floribus plerumque decandris. 



3, Il> maximnm ; foliis oblongis acutis subtus discoloribus^ umbellis terminalibus, calycis 

 laciniis ovalibus obtusis, corollis campanulatis. PL — Linn. — Bot Mag. t 951. Mich, Aw. 

 V. I. p. 259. Piirsh, F2. Am. v. 1. p. 29T. Elliott, Carol, v. 1. p. 433. BigeL FL Bast. ed. 2. 

 p. 168. Torrey, FL ofUn. St v.\,p. 426? 



I _ 



Hab. Canada, Fursh. N.W. Coast, Mr. Menzies. Douglas. — Specimens without flower, with leaves a 

 span long, and probably belonging to this species, were gathered by Mr. Douglas on the summit of the high 

 mountains of the Grand Rapids, and on those forming the subalpine region of Mount Hood, but rarely. 



4. R, Lapponicupi; humile, procumbens, ramis divaricatis, foliis persistentibus ellipticis 

 obtusis rigidis foveolato-punctatis subtus discoloribus lepidotis marginibus reflexis, floribus 

 umbellatis S-S-andris, corollis rotato-infundibuliformibus. — Wahl. Lapp. p. 104, Torrty^ FL 

 of \Jn. St V. 1. p. 426. Hook, Bot, Mag. t 3106. — Azalea Lappoiiica. Liiin. FL Lapp. 

 p. 89. t e.f. 1. PalL FL Ross. v. 2. p. 52. t 70. f. 1. 



Hab. Norton Sound. Nelson. Barren grounds from lat. G5°. to the Arctic sea-shore, I>r. Hichardson, and 

 Islands, CapL Sir E. Parry. Summits of the Rocky Mountains, north of the Smoking River, lat. 56°. 

 Drummond. Labrador. Z)/*. Morrison. — This has been detected on the White Mountains of New Hampshire, 

 United States, by Dr. Bigelow, and I)r. Boott, from whom, as well as from Mr. Greene, who gathered it in 

 the same locality, I have fine specimens. 



5. R. Karntschaticum ; bumile, procumbens, foliis persistentibus obovatis ciliatis venosis 

 nitidis, calycibus amplis foliaceis, corollis rotatis, staminibus Jongioribus. — PalL FL Ross. v. I . 

 /;. 48. t, 33. Cham, in Limicea, v. ].p. 513. 



Hab. Unalaschka. Chamisso, Banks' Island and Port Edgecombe, N.W, Coast, lat. 58", Mr. Menzies, 

 (in Herb, nostr.) 



6. R. albiflormn; erectum, foliis deciduis elliptico-lanceolatis integerrimis membi*anaceis 

 glabris in apicibus ramorum pedunculisque fasciculatis, calycibus subfoliaceis blspidis, 

 corollis (aibis) rotato-cainpanulatis, staminibus 10 erectis sequalibus. (Tab. CXXXIII.) 



Frutex 2-3-pedaIis, erectus, ramosus, cortice fusco glabro tectus. Folia in apicibus ramorum fasciculata, 

 decidua, membranacea, elliptico-lanceolata, glabra, brevissirae petiolata, stipulata; stipulis ovati^ membrana- 

 ceis, concavis, deciduis. Pedunculi fasciculati, laterales et terminales, unciam longi, appresso-setosi, uniflori. 

 Calyx persistens, tubum corollae sequans, 5-partitus, appresse setosus, lobis oblongo-lanceolatis subfoliaceis. 

 Stamina 10, sequalia, erectiuscula. F//a/wcw/a subulata, infeme hirsiita. Ovarium 5-Iobura. Stylus hir- 

 sutus. Stigma 5-lobum. Capsula coriacea, hirsuta. Semina scrobiculata. 



Hab. Alpine woods of the Rocky Mountains. Dmmmond. — A very beautiful and most distinct species, 

 which would be a great ornament to our gardens if it could be introduced. 



Tab. CXXXUI. Ilhododendron albiflorum.— A. riowering specimen, nat.size; fig. 1, Flower; fig. 2, Calyx, 

 stamen, and pistil; fig. 3, 4-, Anthers; fig. 5, Section of the ovary; fig. 0, Stigma, magnified.—^ Portion 

 of a fruit-bearing branch, with gemmiferous scales, whence the leaves of the following year arise; 



fig.7, Capsule, with its persistent calyx; 77,-7. 8, Capsule, bur6ting;7?y. 9, 9, Seeds, covered with thearillus; 



fig. 10, Seed deprived of the arillus;^/7. 1 1, Emhvyo ;— magnified. 



