CROWFOOT FAMILY 261 
long foot-stalk, the lateral ones on quite short ones, each leaflet divided 
into 2 or 3 segments by sinuses reaching 1/3 the distance to the base. 
Upper leaves linear. Dry woods and thickets. March-May. 
Creeping Plants 
17. R. repens, L. (Fig. 5, pl. 49.) Creeprnc Buttercup. Plant 
nearly smooth, spreading by runners, Leaves of 3 leaflets, the terminal 
one on a foot-stalk. 
18. R. reptans, L. (Fig. 3, pl. 48.) Creepinc SpeaRwort. A very 
small plant, creeping by runners, rooting at the nodes. Leaves grass- 
like, in a tuft, 1 to 2 in. high. Flowers solitary from the nodes. On 
sandy shores, somewhat rare but in most of our area. May-Sept. 
10. OXYGRAPHIS, Bunge. 
Small herb resembling Ranunculus, the achene longitudinally striated, 
Flowers small; leaves mostly from the root. 
O. Cymbalaria, (Pursh.) Prantl. (Fig. 3, pl. 50.) SrasipE Crow- 
Foot. (Ranunculus Cymbalaria, Pursh.). Low, about 2 to 6 ft. high. 
Spreading by runners. Leaves mostly directly from the root, broadly 
rounded, heart-shaped at base. Flowers small, singly or in clusters, on 
a nearly naked flower stem; fruit cluster elongated. On wet sandy 
shores. May-Aug. 
tz. BATRACHIUM, S. F. Gray 
Aquatic herbs with leaves alternate and finely dissected. Flowers 
white. Achenes not ridged. Sepals and petals usually 5. 
1. B. divaricatum, (Schrank.) Wimm. (Fig. 38, pl. 49.) STIFF 
WATER Crowroor. (Ranunculus aquatilis, Gray.) Leaves all under 
water, cut into thread-like divisions which, under water are spreading 
but which collapse on being drawn from the water. Leaves mostly with- 
out foot-stalks. 
2. B. tricophyllum, (Chaix.) Bossch. Wuire WatTEeR CROwFOoT. 
(Ranunculus aquatilis, L.). Similar to No. 1, but the dissected leaves, 
at least the lower ones, have rather long foot-stalks and the leaves are 
longer than those of No. 1. 
3. B. longirostris, (Godr.) F. Schultz. Loneg-BeaAKkED WHITE WATER 
Crowroot. Resembles No. 1, but the dissected leaves are on short leaf- 
stems. The fruit (achene) has at its apex a beak nearly 1/16 in. long, 
that of B. divaricatum being minute. In ponds and streams, New Eng- 
land and westward. June-Aug. 
SECOND GROUP 
Seeds in a follicle (Fig. 9, page 396). Shrub 
12 XANTHORRHIZA, L’Her. 
Low shrub, with once or twice compound leaves each with about 5 leaf- 
lets. Terminal leaflet broad and deeply 3-lobed. Side leaflets nearly egg- 
shaped with lobed or nearly continuous border. Bark and long’ roots 
deep yellow. Flowers in long drooping clusters (racemes), pistillate and 
staminate on same stem, Petals small; color, brownish-purple. Stamens 
