1 ( 248 .) 
DRYAS * *. 
Linncan Class and Order. Icosa'n dria f, Polvgy'nia. 
Natural Order. Rosa'ce.e, Juss. Gen. PI. p. 334. — Sin. Gram, 
of Bot. p. 171. — Lindl. Syn. p. 88. ; Introd. to Nat. Syst. of Bot. p. 
81. — Rich, by Macgilliv. p. 528. — Loud- Hort. Brit. p. 512. — Don’s 
Gen. Syst. ot Card, and Bot. v. ii. p. 523. — Mack. FI. Hibern. pt. i. 
p. 85. — Rosales; sect. Rosine; subsect. Rostanaj; type, Ro- 
sace.-e; subtype, Fragarid.e; Burn. Outl. of Bot. v. ii. pp. 614, 
G83, 699, & 700. — Senticos.e, Linn. 
Gen. Char. Calyx (fig. 1, a.) inferior, of 1 sepal, in 8 or 9 
deep, spreading, equal or unequal segments, permanent. Corolla 
of from 5 to 8, occasionally 9, roundish, undivided, spreading 
petals, longer than the calyx, and attached by their clans to its 
rim. Filaments (fig. 1,6.) numerous, hair-like, from the rim of 
the calyx, much shorter than the corolla. Anthers small, roundish, 
of 2 lobes. Gcrmcns superior, numerous, small, oblong. Styles 
(fig. l,c.) lateral, long and hair-like, straight, continuous (see fig. 3). 
Stigmas simple, smooth. Pericarps (seeds, Linn. ; nuts, Lindl. y 
numerous, small, tipped with the permanent feathery styles (see 
figs. 2 & 3). Seeds ascending. Receptacle (fig. 4.) depressed, dry, 
downy, minutely cellular. Flowers white or yellow. 
The 8- or 9-cleft calyx ; the corolla of 8 or 9 petals ; and the 
pericarps with long feathery awns ; will distinguish this from other 
genera in the same class and order. The straight awn will dis- 
tinguish it from Geum. 
One species British. 
DRY'AS OCTOPE'TALA. Eight-petalled Dryas. White Dryas. 
Mountain Avens. 
Spec. Char. Petals, eight. Leaves simple, egg-shaped, or 
somewhat heart-shaped, crenately serrated. 
Engl. Bot. t. 451. — Linn. Sp. PI. p. 717. — Huds. Ft. Angl. (2nd ed. ) p. 226. — 
Linn. FI. Lapp. (2nd ed. ) p. 181. — Willd. Sp. PI. v. ii. pt. ii. p. 118. — Sm. FI. Brit, 
v. ii. p. 555. Engl. FI. v. ii. p. 432. — With. (7th ed.) v. iii. p. 638. — Lindl. Syn. 
p. 99. — Hook. Brit. FI. p. 254. — Lightf. FI. Seot. v. i. p. 274. — Hook. FI. Scot.p. 
165. — Winch’s FI. of Northumb. and Durham, p. 35. — Don’s Gen. Syst. of Card, 
and Bot. v. ii. p. 525. — Mack. Catal. of PI. of Irel. p. 50. ; FI. Hibern. p. 94. — 
Dryas chamadrifulia, Gray’s Nat. Arr. v. ii. p. 578. — Caryophyllata alpine, 
chamcedry os folia, Ray’s Syn. p. 253. — Teucrium alpinum, cistiflore, John- 
son’s Gerarde, p. 659. 
Localities.— On stony alpine heaths, and high mountains, chiefly in a mica- 
ceous or limestone soil. Very rar e.— Durham ; Near the Black A rk on Cronk- 
ley Fell, Teesdale: N. J. Winch, Esq.— Yorkshire; On Arncliff Olowder, a 
mountain within half a mile of Arncliff in Littendale; a few miles from Keln- 
sey: Mr. VV. Curtis, 1782. Near Settle: Dr. Fell. Cronkley Fell at 2000 
feet, and descending even to the edge of Darnbrook, near Arncliff: R. Bowman, 
in N. B. G. — SCOTLAND. On the Highland mountains, in many places. On 
the micaceous mountains in Breadalbane; and on the limestone rocks in Skye. 
Fig. 1. Flower, with the petals taken off ; a. the calyx ; b. the stamens ; c. the 
pistils.— Fig. 2. The Receptacle, and Seeds with their feathery appendages, sub- 
tended by the permanent calyx. — Fig. 3. A Seed. — Fig. 4. The Receptacle. 
* So named by Linnaws from the dryadcs or nymphs of the oaks, in consequence 
of the leaves hearing some resemblance to those of the oak. Don. 
t See Primus cerasus, folio 100, note r. 
