218 Rosaceae 
SANGUISORBA. BURNET 
Herbs. Leaves pinnate; leaflets petiolulate; stipules none. Flowers perfect or 
polygamous, in long-peduncled spikes. Calyx-tube turbinate, contracted at the throat; 
calyx-segments 4, petal-like. Petals none. Stamens 0 or 4—12. Pistils 1—3, free 
from the calyx; style terminal. Akene enclosed in the hardened 4-winged calyx-tube. 
(L. sanguis—blood; sorbere—to absorb; from reputed styptic properties. ) 
A. Leaflets toothed. 
B. Calyx-segments white or slightly tinged with purple. W. E. (S. latifolia.) 
S. sitchensis Mey. 
BB. Calyx-segments dark-purple. 
C. Stamens 2—3 times as long as the calyx-segments; filaments flattened and di- 
lated specially towards the apex. C. (5S. media for our region.) 
S. menziesii Rydb. 
CC. Stamens hardly if at all longer than the calyx-segments; filaments filiform. C. 
(S. officinalis for our region. ) 
S. microcephala Presl. 
AA. Leaflets pectinate-pinnatifid. E. (Poterium pecidenfales) 
S. annua Nutt. 
AGRIMONIA. AGRIMONY 
Herbs, tall, perennial. Leaves odd-pinnate. Flowers yellow, small; racemes ter- 
minal, long, slender. Calyx-tube turbinate, somewhat contracted at the throat, surround- 
ed by a dense border of hooked prickles or rarely 5-bracteolate; segments 5. Petals yel- 
low. Stamens 5—I5. Pistils 2, distinct; style terminal. Akenes 1——2, enclosed in 
the hardened calyx-tube. (Gk. agros—field, monos—alone; the chief of the field, on 
acount of medicinal properties.) W. (A. eupatoria for our region.) 
A. gyrosepala, Wadir. 
DRYAS ALPINE AVENS 
Herbs, slightly shrubby, dwarf, matted, alpine (ours). Leaves simple, toothed, 
white-tomentose beneath (ours); margins revolute (ours). Flowers large, solitary, on 
slender scapes. Calyx open, salverform, shallow, 8—9-parted; segments linear (ours). 
Petals exceeding the calyx. Receptacle dry. Pistils many; style terminal, persistent, 
elongated, plumose. (Gk. dryas==a wood-nymph; from the wood habitat.) C. E. 
D. octopetala L. 
GEUM AVENS 
Flerbs, perennial. Leaves mostly basal; basal leaves lyrate or pinnate; stem-leaves 
lobed or compound; stipules adnate. Flowers solitary or in corymbs. Calyx deeply 
5-cleft; segments reflexed. Petals obtuse or emarginate. Stamens many. Receptacle 
dry, conic or clavate. Pistils many; style terminal, the base persistent, jointed above 
the middle, the joint becoming a hook in fruit (ours). (Gk. geyo=to taste well; some 
have edible roots.) 3 
A.  Leaf-segments and their lobes acute; terminal leaflet cuneate-obovate; receptacle 
downy-pubescent. E. G. strictum Ait. (Yellow Avens) 
AA.  Leaf-segments and their lobes obtuse; terminal leaflet broadly cordate; receptacle 
nearly naked. W.C. E. (G. oregonense.) 
G. macrophyllum Willd. (Large-leaved Avens) 


