366 OXILIDACEAE 
to base; lobes also cleft into numerous divisions. Flower stalks rather 
short, branched, each branch with 2 flowers. Sepals as long as the pale 
purplish petals. Beak about 1 in. long. Barren soil, east Mass., westward 
and southward. April-Aug. 
4. G. Bicknellii, Britton. BmicKNELL’s CRANE’S-BILL. Similar to last, 
but flower-stalks do not exceed the leaf-stalks. New York, New England 
and northward. May-Sept. 
(The following species, introduced, are more or less naturalized and are 
found in limited localities in our area.) 
5. G. dissectum, L. (Fig. 5, pl. 84.) CUT-LEAVED CRANE’S-BILL. 
Petals not longer than the sepals. Sepals not curved outward. Flower- 
stalks shorter than leaves, two flowered. 
6. G. columbinum, L. (Fig. 8, pl. 84.) LonG-STALKED CRANE’S-BILL. 
Slender, mostly prostrate; leaves 1 to 14 in. diameter. Sepals and petals > 
of about the same length. Borders of sepals curved outward. Flower- 
stalks longer than leaves. 
7. G. pusillum, L. (Fig. 4, pl. 84.) SMALL-FLOWERED CRANE’S- 
BILL. Stems procumbent, diffusely branching, with soft hairs. Petals 
longer than sepals. Carpels not wrinkled. Stamens 5. 
8. G. molle, L. (Fig. 9, pl. 84.) Dovn’s-roor CRANE’S-BILL. 
Similar to last, but more hairy. Petals about twice as long as sepals, 
Carpels transversely wrinkled. Stamens 10. 
9. G. rotundifolium, L. (Fig. 7, pl. 84.) RouND-LEAVED CRANE’S- 
BILL. Stems decumbent, slightly hairy. Leaves divided nearly to base; 
lobes linear; general form rounded. Sepals velvety. Fruit and seeds 
with long silky hairs tipped with purple glands. 
10. G. sibiricum, L. (Fig. 6, pl. 84.) SrpeRIAN CRANE’S-BILL. 
Stems decumbent, freely branched, silky. Leaves deeply 3-parted, divisions 
strongly toothed. Flowers dull white, generally solitary. 
ll. G. pratense, L. Spreaprnc CRANr’s-BILL. Leaves mostly T- 
parted, the narrow lobes deeply cut. Flower stems downy. Corolla deep 
purple. Maine and locally in Mass. 
2. ERODIUM, L’Her. 
Resembles Geranium, but leaves are, in our species, pinnate, 7. e., feather- 
formed. Of the stamens 5 are perfect, the others sterile, greatly reduced 
or wanting. 
E. cicutarium, (L.) L’Her. Hemiock SrorK’s-BILL, HERON’S-BILL. 
Growing in tufts. Hairy, low, spreading. Leaves of opposite leaflets 
on an elongated axis, the leaflets deeply cut. Flowers purple, nearly 3 
in. broad, The beak very long. Introduced. April-Sept. 
Famity IIl.—OXALIDACEAE. Woop-sorreL FAMILY 
Herbs, with 3-foliate leaves, 10 stamens, of which 5 are shorter 
than the remaining 5 (rarely 15); 5 styles, more or less coherent. 
Sepals 5; petals 5; symmetrical. Fruit a capsule with 5 valves. 
Ovules several in each cavity. Leaves basal or alternate. 
