xxvii. rosacea: rose^e. 
121 
Geum.~\ 
nating with the segments ( or 8 — 10 -cleft, the segments alter- 
nately smaller) ; the tube short nearly flat and not investing 
the fruit. Petals usually 4 — 5. Mostly herbaceous plants , 
sometimes shrubs. Leaves usually compound. (Gen. 3 — 9.) 
* Ovule at a distance from the base of the style. Radicle inferior. 
3. Dryas Linn. Dryas. 
Cal. 8 — 10-cleft, its segments equal. Pet. 5 — 8. Styles ter- 
minal. Ovules lateral. Achenes with long feathery not jointed 
awns. Receptacle flat. — Name : 1/jvc, the oak; from a distant 
similarity between their leaves. 
1. D. octopetala L. ( white D ., Mountain Averts) ; petals 8, 
leaves obtuse simple crenato-serrate. E. B. t. 451. D. de- 
pressa Bab. in Ann. Nat. Hist. x. t. 7. 
Frequent in alpine parts of England, Scotland, and Ireland, espe- 
cially on limestone ; north coast of Sunderland, abundant. 2/.. 6,7. 
— Stem short, procumbent. Leaves ovate-elliptical, white and downy 
beneath, petioled. Flowers large, white. In a form found in the 
county of Clare, Ireland, the calyx is clothed with nearly black hairs. 
4. Geum Linn. Avens. 
Cal. 10-cleft, alternate segments minute. Pet. 5. Styles 
terminal. Ovules lateral. Pericarps with long geniculate 
awns. Receptacle elongated. — Named from yivio, to yield an 
agreeable flavour. The roots of G. urbanum are aromatic. 
1. G. urbanum L. ( common A.) ; flowers erect, heads of fruit 
sessile, upper joint of the awn glabrous and much shorter than 
the lower one, cauline leaves ternate, radical ones interruptedly 
pinnate and lyrate. E. B. t. 1400. 
Woods and hedges, frequent. If.. 6 — 8. From 1 to 2 ft. high. Root- 
leaves on long foot-stalks. Stipules large, rounded, lobed and cut. 
Flowers small, yellow. Calyx and obovate petals patent. 
2. G .rivale L. (Water A.); flowers drooping, heads of fruit 
stalked, upper joint of the awn feathery about as long as the 
lower one, cauline leaves ternate radical ones interruptedly 
pinnate and lyrate. E. B. t. 106. 
Marshes and wet moory grounds, frequent : sometimes very alpine. 
If.. 5 — 7. — A shorter, but stouter plant than the last. Flowers 
much larger, with erect purplish calyces and erect dull purplish 
orange-coloured petals, broadly obcordate, clawed. Stipules small, 
ovate find toothed. There is a not uncommon plant, the G. inter- 
medium Ehrh., which some call a species, but has now been proved 
by Dr. T. Bell Salter to be a hybrid between these two : in it the 
flowers are sometimes erect, sometimes drooping, petals roundish and 
clawed, calyx and corolla intermediate as to position and colour, heads 
G 
