412 



LXXXVI. CUPULIFEK^. 



shining slightly viscous, leaves nearly orbicular and bluntly 

 sinuate-toothed soon glabrous on both sides, fertile catkins as 

 large as the barren ones, scales of both deeply palmatlfid aud 

 sericeo-pilose, stigmas (purple) cuneate irregularly 3- ' ' 

 E, B. t. 1909. 



4-lobed. 



Moist vroods. Frequent in Scotland, even at a considerable eleva- 

 tion on the mountains. \i . 3, 4. — The tree is well known by the 

 tremulous movement of its leaves with the slightest breath of -wind 

 Avhich is aided by their stalks being much and laterally compressed ' 

 a character, however, to be observed in most other species. The fio-u^e 

 in E. BoL and Smith's description, are not taken from the usual 

 form of the stigmas, although they may be occasionally divided as 

 represented, the auricle being one of the lobes. This species alone 

 of all those which are reputed British, "occurs in the middle of our 

 large woods remote from the inclosed country." — Bromf, 



if-^ 



Scales of caiMns glabrous, ciliated at the apex. Catkins in fruit lax 

 moniliform, Stam, 8 — 30. Stigmas reniform or roundish^ crenate 



Aigeiros. 



sometimes 2-Iobed at the apex, 



4. P. *m^raL. (black P.); leaf-buds glabrous viscous, leaves 

 ovate deltoid or rhomboid cuspidate pointed crenate or serrate 

 quite glabrous on both sides, stipules ovate acuminate, sti«"raas 



(not 



roundish 2-lobed at the apex, 

 the stigmas) 



Watery places and river-banks, scarcely indigenous, Tj . 4. — A 

 very large tree of quick growth, producing a light not valuable wood» 

 The well known Italian Poplar, or P. fastigiata Pers., appears to be 

 a mere variety of the present, with erect, instead of spreading, 

 branches. 



i 



ti 



\k 



Ord. LXXXVI. CUPULIFE R^ i^^•cA. 



r 



Monacio'm.— Barren fl. amentaceous or in a lax spike. Sta- 



■20, inserted into the base of scales or of a membranous 



mens 5 



valvate perianth, generally dktmct— Fertile fi. aggregated or 

 spicate or amentaceous. Ovary with several cells, crowned by 

 the rudiments of a closely adherent perianth, seated within a 

 coriaceous or somewhat leafy involucre (cupule) of various 

 forms. Ovules in pairs or solitary, pendulous or peltate. 

 Stigmas several, nearly sessile, distinct, 

 coriaceous 1 -celled nut (a gland), 1—3 together, more or less 

 enclosed in the involucre. Seed solitary. Albumen wanting. 

 Emhryo large: cotyledons plano-convex; radicle minute, 

 superior. — Trees or shrubs. Leaves alternate, simple, often 

 with veins proceeding straight from the midrib to the margin. 



Fruit a bony or 



It 



V 



1, 



