﻿popull-s. SALICINEiE (auctor A.WESMAEL). 329 



13. P. Canadensis (Desf. Cat. hort. Par.), gemmis glabris viscosis, foliis deltoi- 

 deis vel ovali-deltoideis v. subrhomboideis v. ovalibus acuminatis acerosis 

 eroso-denticulatis vel eroso-crenulatis basi subcordalis junioribus ciliolatis 

 adultis glabernmis rarissime discoloribus. 5 ln America sept. ad ripas Sas- 

 katchawan (Bourg. h. Anders.!), Missouri (h. Vindob.l), Mississipi (\V\eM. in 

 h. Vind.!), ad Burlington Vermont (Oakesh. Vind.!), Louisiana (Drumm. h. 

 \indob.! Tainturier h. DC.!), Ohio (Franck h. DC!) , ad CoSurado Majave Valley 

 (Expl. Color. 1861), Novo Kexico (Fendler h. Rrgel, Anderson!). — Michx f. 

 Arb. 3. t. 11; Spach Hist. Veg. 10. p. 300 : Seringe (1. jard. 2. p. 65. P. mo- 

 nilifera Ait. hort. Kew. 3. p. 406; Willd. Arb. 232, sp. 4. p. 805; Wats. 

 dendr. t. 102 ; Spach ibid. p. 389; Seringe ib. p. 63; Michx f. 3. t. 10. n. 2. 

 P. Virginiana Dum. Cours. Bot. Cult. 6. p. 400. P. Marylandica Bosc Nouv. 

 cours p. 409. P. lae\igata Willd. sp. 4. p. 803; Pursh fl. Am. 2. p. 619. 

 P. Lindleyana, P. neglecta et P. liEviga'a hort. (ex Koch Wochens. 1865. 

 p. 236). P. glandulosa Mocnch Meth. p. 339. Peuplier Suisse hort. belg. — 

 Arbor mas feminea major, elalior. Cima ampla, conica. Rami patentes, 

 ramosissimi, griseo- iel brrnneo-virides; ramuli juniores angulosi vel cylin- 

 drici (in eadem aibore ssepissime angulosi vel cylindrici, in fem. saepius 

 angulosi). Amenta masc. circiter 3 poll. longa, crassa, cylindrrca, densis- 

 sima, ses<-ilia; bracteolis oblusissimis , apice ciliatis, ciliis membranaceis. 

 Stamina 20-30. Amenta fem. 2-3 poll. longa , cylindrica; rhachi glabra; 

 bracleolis lutescentibus, caducissimis: cupula ovanum viride medium usque 

 cingente. Ovarium subglobosum, 6-sulcum. Stylus 3-4-furcatus. Stigmata 

 luteo-viridia, margine purpurea, remformi-biloba. Amenta fruct. 3-4 poll. 

 longa. Folia rigida, in masculis majora, surculorum maxima, basitruncata vel 

 subcordata vel rotundata, margine cartilaginea; petioli glabri, compressi, 

 luteoli vel purpurascentes, nunc apice biglandulosi, saepius limbo longiores. 

 Folia arboris masculas circiler2 hebdom. post fem. evolula. Stipulss angulata;, 

 acuminatae, caducissirnae. — In plerisque aucloribus massub nomine P. moni- 

 liferae et fem. sub P. Canadensis. (v. s. c. et sp. et v. c.) 



p, discolor, foliis discoloribus, capsulis pubescentibus. In hortis (h. Vind.! 

 petrop. ! Anders. ! ) 



y, angustifolia , ramulisterelibus glabris. foliis ovato-lanceolatis attenuatis 

 basi aculis glabris crenato-serratis. In America sept. ad fontes flum. 

 Platte; Cannon Cascade river (Expl. Col. riv. 1801). P. angustifolia Jam. 

 Torrey Ann. Lyc. New York p. 249, Nutt. Sylv. 1. p. 52. t. 16. 



14. P. ciliata (Wallich cat. n° 2796), gemmis viscosis conicis, foliis cordatis 

 vel ovatis acuminatis inaequaliter dentalis, junioribus sericeis margine ci- 

 lialis, adultis glaberrimis nervosis sericeis margine ciliatis. v 5 In Kamaon, 

 northern face of Choor in Ind. sept. (Wall. in h. Regel et ^ an Heurckl). 

 — Royle, illust. of the bot. Himalaya, p. 346. f. 84. 1. P. pynlormis Royle 

 ib. p. 344 (fide cl. Hook. f. in lit.). Rami angulali, pubescentes. Folia 4-5 

 poll. lonpa, 2 y - 3 2 poll. lata, supra viridia, subtus pallida; nervis rufescen- 

 tibus;'petiolis compressis2-4^- poll. , pubescentibus. Amentafructifera 5-6 poll. 

 longa. (v. s. sp.) 



§3. Gemmss viscosx, rami juniores vucosi. Folia subtvs albida, 

 pctiolis leretibus. Stamina 20-30. — Sectio Tacamahaca Spach 

 loc. cit. p. 32. 



15. P. balsamifefa ( L. sp. 1464), amentis viscosissimis crassis conicis, ramis 

 junioribus glabris viscosis, adultis cylindricis vel angulosis, fuliis membrana- 

 ceis subtus albidis saepeque rubigifie sufrmds. $ In hemispnasrio bor. Amenta 

 praecocia, masc. laxifiora, 2-jpull. longa; rhachi alata, alis membranaceis. 

 Stamina 20-30. Cupula.longe pedunculata. ' Amenfa' fem. per anthesin 2-3 

 poll. longa, bracteolis luteis caducissimis. Cupula ovarium medium usque cin- 

 gens, lutea, glabra. Stigmata lobis 2, ovario latioribus, reflexis, subpurpureis 



b, genuina, arbor elata, ramis subcylindricis, foliis ellipticis ovalibusve 

 acutis basi rotundatis vel cordalis rigidis obtuse dentatis, dentibus carti- 



