568 POLYGONACEZX ERIOGONUM 
6 Rumex Sepals6, the outer spreading, the inner enlarged and appress- 
ed to the triangular achene: stigmas 3, tufted. 
7? Oxyria Sepals 4, thejouter smaller and spreading: stigmas 2, tufted: 
achenes orbicular, winged. 
Tribe 1 Eriogonex Meisner Pl. Vas. Gen. 229, as Order. Herbs 
or shrubby plants with alternate or verticillate leaves without stipules. 
Flowers involucrate, 3-6-parted or 3-6-lobed. Stamens 9. Styles 
3, with capitate stigmas. Juice nea rly tasteless. 
1 ERIOGONUM Michx. Fl. 1246. (1803.) 
Annual or perennial acaulescent or leafy- stemmed herbs or shrubs 
with entire alternate opposite or whorled leaves and small, perfect 
flowers on jointed pedicels subtended by an involucre in panicles 
racemes heads or umbels. Involucre campanulate top-shaped or 
almost cylindrical, 5-8- toothed or 5-8 cleft, the teeth pointless. 
Calyx*5-cleft or 5-parted, usually colored, the segments equal or 
the outer ones larger. Stamens 9, with filiform filaments and 
oblong anther. Style 3-parted, stigmas capitate. Fruita3-angled 
pyramidal achene invested by the calyx-segments, or winged. 
§ 1 Involucre not nerved or angled, 4—-8-toothed or lobed, more 
or less broadly turbinate: bracts foliaceous, indefinite in number. 
* Perennials, more or less tomentose or rarely glabrous, with pedun- 
cles naked and scape-like, or verticillate-bracteate in the middle: bracts 
mostly conspicuous: involucres 5-8-toothed or 5-8-cleft, in a simple or_ 
compound umbel or solitary: flowers mostly attenuate toa stipe-like — 
base: achenes glabrous or nearly so. 
E. flavum Nutt. Fras. Cat. (1813.) White-tomentose throughout: stems 
very short and thick, simplejand solitary to tufted and creeping, woody: 
scapes 2-12 inches high: leaves ‘crowded on the short stems. linear-oblong 
to lanceolate, ,1-3 inches longjnarrowed into petioles with dilated and imbr- 
icated base inflorescence regularly umbellate: involucre top-shaped, 2-246 
lines Jong: bracts spatulate, foliaceous: calyx yeliow 8 lines high, top-shaped, 
very villous, the segments obovate: stamens and_style-branches exserted 
achenes constrictedjat the middle, 2 lines long, villous at the summit the 
angles undulate, the faces swollen, Dry plains eastern Washington to 
Arizona and Nebraska. 
E. Piperi Greene. ‘‘ Densely tufted on a stout woody caudex: stems 
erect, leafless tomentose, 5-10 inches tall: leaves all basal, lanceolate or 
oblanceolate, acute or obtuse, densely hairy beneath, green and less hairy 
above, 1-2 inches long, attenuate into a usually shorter petiole: umbels 
several-rayed, simple, or contracted into a dense cluster: bracts 3-8, oblan- 
ceolate, 1-114 inches long: involucre short-toothed, villous: flowers yellow , 
2-3 lines long. Summit of Cedar Mountain, Washington. Hardly distinct 
fromsE.tflavum{Nutt..’”’ Piper & Kent in Palouse Flora, 50. 
E.“androsaceum™ Benth. Dwarf perennial: tomentose throughout or 
smoother above: caudex branching: leaves oblanceolate or spatulate, white- 
woolly beneath, glabrate above: scapes;2-3,inches high, simple: umbel simple 
or subcapitate, 4-7- rayed: rays ‘“shortgand slender: teeth of the involucre 
short, erect or nearly so:flowers sparingly villous, yellow, 2-3 lines long, short 
attenuate. On the high mountains of eastern Washington to Brit. Columbia . 
