﻿330 DICOTYL. seu EXOGENjE. populus. 



lagineis subeiliolatis. In America sept. : Terra Nova (La Pylaie, h. DC. !), 

 Connecticut (Oakes, h.DC.!),mont. Alleghanies (Rafin. h. [-"etrop.l^lacum 

 Winipeg et flum. Saskatchawan (Bourg. h. AncU); in Sibiria ad Kam- 

 schatka (Rider h. Petrop.!, Stubendorff id.). P. balsamifera Michx 

 arb. 3. p. 306, t. 13, n° 1; Nouv. Duh. 2. t. 50. P. Tacamahaca Mill. 

 dict. 6, p. 97. P. viminea Bon Jard. 1845, p. 565? — Variat : foliis va- 

 riegatis (Mill; Loud. Encycl. p. 830). (v. v. c.) 



P, suaveolens (Loud. Encycl. p. 830), arbor ramis cylindricis, foliis late 

 ellipticis acuminatis obtuse dentatis petiolo nervisque praecipuis subpu- 

 bescentibus. In America sept.: Rocky Mount. (Hall et Harbour, b. DC.!); in 

 Sibiria (Schenk, h. Petrop.! ; Stubendoff, h. Petrop.!), ad torrentem 

 Terekty (Kar. et Kir. h. Petrop. et DC.!), ad flum Amur (Maximow., b. 

 Petrop. !); ad Baicalem australem (h. Ledeb. !), in Kamtchatka (h. Re- 

 gel!). P. macrocarpa (Schrenk! enum. plant. nov. 1842. p. 16, Schrenk 

 in h. Petrop.I). (v. v. c.) 



y, laurifoHa, ramis angulosis junioribus subpilosis, foliis ovalibus oblon- 

 gisve plus minus longe acuminatis vel lanceolatis nunc subcordatis den- 

 tatis junioribus subpilosis. In Sibiria : ad Ulban (Ledeb. h. Regel!), ad 

 ripas Ulba, Uba, Irtysch, Buchtorma(Led. fl. Alt. p. 297), in mont. Altal 

 (Ledeb.! h. Vindob. et DC). P. laurifolia Ledeb. icon. fl. alt. t. 479. (v. s. 

 sp. et c, v. c.) 



8, viminalis (Loud. Encycl. p. 830), ramis angulosis elongatis gracilibus 

 flexuosis, foliis longe lanceolatis. P. viminalis Lodd. cat. ed. 1836. P. Lind- 

 levana Boolh in Rev. hort. 1867. p. 380. P. salicifolia hort. P. longifolia 

 Pall. Ross. t. 41. B. (v. v. c). 



!6. P. Simonii (Carr. in Rev. hort. 1867. p. 360), foliis coriaceis crassis sub- 

 erectis breviter petiolatis valde irregulariter ovato-ellipticis utrinque aequali- 

 ter attenuatis dentibus crispatis subarcuatis brevibus utrinque glabris supra 

 intense viridibus subtus albido-g'aucis subcer.eis. -f In China (Eug. Simon). 

 Arbor elata, ramis patulis elongatis, cortice rufo-brunneo, lenticellis sparsis 

 albidis linearibus lineam longis, angulis quinque validis subaliformibus pur- 

 purascentibus. Gemmas parvae, eiongatae, valde adpressae, intense rufae, 

 lucida», viscosae. Folia 5-6 poll. longa, 3-3 1 poll. lata, petiolo 9-10 lin. longo, 

 crasso, canaliculato , supra et inde medium usque limbi purpurascente. 

 Amenta ign. 



17. P. candicans (Ait. Hort Kew. 3. p. 406), gemmis glabris viscosis, ramis ter- 

 minalibus angulosis teretibus, foliis cordatis deltoideis vel ovalibus basi trun- 

 catis vel rotundatis acuminatis acerosis inaequaliter dentatis saapius subtus 

 puberulis lanceolatis chartaceis. $ in Canada (Spach Hist. Veg. ; Ser. fl. 

 Jard. 2, 63), Massachusetts, New Hampshire, Rhode Island (Mich. fil. arb. 3, 

 p. 308).— Mich. f. Arb. 3. t. 2. f. 2 ; Willd. arb. 231, Sp. plant. 4. p. 806; 

 Spach hist. Veg. 10. p. 392; Seringe fl. jard. 2. p. 62. P. nigra Catesby 

 Carol. 1, f. 34. P. macrcphylla Lindl. enc p. 840. P. Ontariensis Desf. 

 Hort. par. P. Canadensis Mosnch Weiss. 81. P. Iatifolia Moench meth. 338. 

 P. Acladesca et P. heterophylla hort. ex Koch Wochens. 1805, p. 238. 

 Cortiex griseus, in vetustis arboribus rimosus; ramuli tenuiter pubescentes; 

 gemmae elongato-conicae, acutae, brunneo-luteae. Folia juniora utnnque pubes- 

 centia; adulta quam latitudo multo longiora, dentibus obtusis apice ciliatis, 

 supra intense viridia, subtus pallide alba, nervis subtus rufescentibus, pe- 

 tiolo 1 -1--3 poll. longo, depresso, pubescente, juniore 2-glanduloso . Amenta 

 masc..., Tem. foliis multo prascociora, pedunculata, in anthesi 1-poll. longa, 

 oblongo-cylindracea, obtusa, densissima, bracteolis caducis, glabris, fimbria- 

 tis. Stigmata reniformi-2-loba, ovario latiora. Cupula cyathiformis, crenata. 

 Amenta fructifera, 4-5 poll. longa. Capsula ovato-pyramidalis, obtusa, cras- 

 siuscula, circiter 2 lin. longa (v. v. c). 



18. P. trichocarpa (Torr. et Gray, in Hooker Icon. plant., vol. 5. t. 878), foliis 

 sublonge petiolatis cordato-triangularibus serratis glabris subtus pallidis mi- 

 nute reticulatim venosis, amenti feminei squamis laciniatis villosis, ovariis 

 globosis dense tomentosis, stigmatibus insigniter basi lobato-dilatatis. $ Hab. 

 ad Saitta Clara River, prope Beneventano , Californias. 



