( 506 .) 
PO'PULUS* *. 
Linnean Class and Order. Dias'ciAf, Octa'ndriaJ. 
Natural Order. Saucine^ §, Rich, by Macgilliv. p.543. — 
Lindl. Intr. to Nat. Syst. p. 98. — Salica'cea;, Loud. Arboret. et 
Frutic. Brit. v. iii. p. 1453. — Amf.nta'ce.e, Linn. — Juss. Gen. PI. 
p. 407. — Sm. Gram, of Bot. p. 189. — Lindl. Syn. p. 228. — Loud. 
Hort. Brit. p. 534. — Mack. FI. Ilibern. p. 242. — Hook. Brit. FI. 
(4th edit.) p. 419 — Querneales; sect. Quercina: ; type, Sali- 
caceaj ; Burn. Outl. of Bot. pp. 523 & 526. 
Gen. Char. Sterile Floicers. Catkin (fig. 1.) oblong, cylindri- 
cal, loosely imbricated every way, many-flowered. Calyx (fig. 2, a.) 
a single-flowered, wedge-shaped, flat scale, unequally jagged at the 
summit. Corolla (fig. 2, b.) of 1 petal ; turbinate and tubular 
below ; dilated, undivided, obliquely cup-shaped in the border. 
Filaments (see fig. 2.) 8, or more, hair-like, very short. Anthers 
drooping, large, quadrangular. — Fertile Flowers. Calyx, Corolla, 
and Catkin, as in the sterile flower (see fig. 4, a, and b). Germen 
(fig. 4, c.) superior, egg-shaped, pointed. Style none. Stigmas 
4 or 8, awl-shaped. Capsule egg-shaped, of 2 concave valves, and 
1 cell. Seeds numerous, small, egg-shaped, each crowned with a 
tuft of fine hairs. 
The imbricated catkin ; the jagged scale of the calyx ; the tur- 
binate, oblique, undivided corolla, of both sterile and fertile flowers. 
The 4 or 8 stigmas; the superior, 1 -celled, 2-valved capsule; and 
the tufted seeds, of the fertile flowers; will distinguish this from 
other genera in the same class and order. 
Four species British. 
PO'PULUS NIGRA. Black Poplar. Old English Poplar. Wil- 
low Poplar. Water Poplar. 
Spec. Char. Leaves deltoid or trowel-shaped, pointed, ser- 
rated, smooth on both sides. Fertile Catkins cylindrical, loose. 
Stigmas four. 
Engl. Bot. t. 1910. — Johnson’s Gerardo, p. 1486. f. 2. — Park. Theatr. Bot. p. 
1410. f. 3. — Bauli. Hist. v. i. pt. ii. p. 155. with a figure. — Ray’s Syn. p. 446. — 
Linn. Sp. PI. p. 1464.— Huds. FI. Angl. (2nd ed.) p. 434. — Willd. Sp. PI. v. iv. 
pt. II. p. 804. — Sm. FI. Brit. v. iii. p. 1081. ; Engl. FI. v. iv. p. 245. — With. (7th 
edit.) v. ii. p. 488. — Gray’s Nat. Arr. v. ii. p. 243. — Lindl. Syn. p. 238. — Hook. 
Brit. FI p. 437. ; ibid. 5th edit. p. 325. — Macr. Man. Brit. Bot. p. 215. — Hunt. 
Evel. Sylva. p. 208, n. 2.— Loud. Arb. et Frutic. Brit, v. iii. p. 1652. fig. 1513. ; 
and v. vii. t 219, 220, & 221.; Encycl. of Trees and Shrubs, p. 824. f. 1498. — 
Lightf. FI. Scot. v. ii. p. 618. — Davies’ Welsh Bot. p. 95. — Sibth. FI Oxon. p. 126. 
—Abb. FI. Bedf. p. 215.— Purt. Midi. FI. v. ii. p.480.— Relh. FI. Cant. (3rd edit.) 
p. 409. — Hook. FI. Scot. p. 289. — Grev. FI. Edin. p. 210. — FI. Devon, pp. 160 and 
Fig. 1. Sterile Catkin. — Fig. 2. A separate Flower of ditto ; a. the Scale, or 
Calyx; b. the Corolla. — Fig. 3. A fertile Catkin. — Fig. 4. A separate Flower of 
ditto ; a. the Scale ; b. the Corolla ; c. the Germen. 
* Populus, or the tree of the people, as it was esteemed to be in the time of 
the Romans, and of the French revolution. Hooker. 
4 See fol. 143, note 4 . $ Sec fol. 42, note t. § See fol. 434, a. 
