86 RANUNCULACEAE, (Vou. II. 
26. OXYGRAPHIS Bunge, Verz. Suppl. Fl. Alt. 46. 1836. 
Perennial herbs, with crenate dentate or lobed long-petioled leaves, and small yellow 
flowers, solitary or 2-7 together on scapes or scape-like peduncles. Sepals usually 5, spread- 
ing, tardily deciduous. Petals 5-12, each bearing a small nectar-pit near the base. Stamens 
and pistils numerous. Head of fruit oblong, oval or subglobose. Achenes compressed, 
sometimes swollen, longitudinally striate, without a hard coat. [Greek, sharp-style. ] 
About 10 species, the following of North America, Asia and southern South America, the others 
Asiatic. 
1. Oxygraphis Cymbalaria (Pursh) Prantl. 
Seaside Crowfoot. (Fig. 1631.) 
Ranunculus Cymbalaria Pursh, Fl. Am. Sept. 392. _ 1814. 
Oxygraphis era Prantl, in Engl. & Prantl, Nat. ‘pa. 
Fam. 3: Abt, 2,63. 1891. 
Cyrtorhyncha Cymbalaria Britton, Mem. Torr. Club, 5: 161. 
1894 
Low, glabrous, spreading by runners. Leaves mostly 
basal, slender-petioled, the blade cordate-oval or reni- 
form, crenate, 2’/-9’ long; flowers 1-7, about 3//-4/’ 
broad, borne on scapes 1/—6/ long, these sometimes bear- 
ing one or more leaves toward the base; head of fruit ob- 
. long, 3/’-8’’ long; achenes compressed, somewhat swol- 
len, distinctly striate, minutely sharp-pointed. 
On sandy shores, Labrador to New Jersey, west along the 
St. Lawrence River and the Great Lakes to Minnesota and the 
Northwest Territory, and in saline soil throughout the western 
half of the continent, extending into Mexico. Plant some- 
what fleshy. Alsoin Asia and South America, The so-called 
var. alpina isa small northem form. Summer. 
27. THALICTRUM IL. Sp. Pl. 545.1753: 
Erect perennial herbs. Leaves ternately decompound, basal and cauline, the latter al- 
ternate. Flowers perfect, polygamous or dioecious, generally small, greenish-white, panicled 
or racemed. Sepals 4 or 5. Petals none. Carpels commonly few, one-seeded, ribbed or 
nerved, stipitate or nearly sessile. Stamens ©, exserted. [Derivation doubtful. ] 
A genus of about 75 species, most abundant in the north temperate zone, a few in the Andes of 
South America, India ‘and South Africa. In addition to the species described below, about 8 others 
are North American, natives of the Southern States, the Rocky Mountains and the Pacific Coast. 
Flowers perfect. 
Stem simple, scape-like; achenes sessile; filaments slender. 1. JT. alpinum, 
Stem branched, leafy; achenes long-stipitate; filaments petal-like. 2. T. clavatum, 
Flowers dioecious or polygamous. 
Filaments filiform or slender, not wider than the anthers. 
Flowers strictly dioecious. 
Achenes terete; eastern species. 
Leaflets thin, orbicular or broader; roots not yellow. 
Leaflets thick, obovate or reniform; roots bright yellow. 
Achenes 2-edged; western species. 
Flowers polygamous; leaflets usually glandular, or waxy. 
Filaments spatulate, often wider than the anthers; plant not glandular. 
T. dioicum. 
T. coriaceum. 
T. venulosum., 
T. purpurascens. 
T. polygamum. 
al iG pet) 
1. Thalictrum alpinum L. Arctic or Dwarf 
Meadow-Rue. (Fig. 1632.) 
Thalictrum alpinum V,. Sp. Pl. 545. 1753: 
Smooth or slightly glandular, 1/-12’ high. Leaves 
small, tufted at the summits of scaly rootstocks, biter- 
nate; the scapiform stem leafless or 1-leaved near the 
base; leaflets cuneate-obovate or orbicular, firm, 3-5- 
lobed at the apex, margins revolute; panicle very sim- 
ple, often racemose; flowers perfect; stamens about 
10; filaments filiform, about equalling the sepals; an- 
thers oblong-linear, mucronate; stigma linear; achenes 
1%” long, obliquely obovoid. 
Anticosti, Newfoundland and arctic America generally. 
Also in the Rocky Mountains, and in Europe and Asia. 
Summer. 
