Rydberg : Rocky Mountain flora 143 



British Columbia: Swamps at Gold Stream, Aug. 3, 1905, 



Shaw 10S 1. 



Aster eriocaulis sp. nov. 



Perennial, with a rootstock ; stems about 8 dm. high, leafy, 

 more or less villous, especially above, purplish ; stem-leaves lan- 

 ceolate, 3-7 cm. long, ciliolate on the margins, otherwise glabrous, 

 more or less auriculate-clasping ; inflorescence a round-topped 

 panicle; involucres 8 mm. high, 10-12 mm. broad ; bracts linear, 

 acute, more or less ciliate, in 2-3 series, with green midrib and 

 lanceolate green tips, or the outermost almost wholly green ; rays 

 purple, 8-10 mm. long ; achenes sparingly hirsute-strigose. 



This species is perhaps most nearly related to Aster loncho- 

 phylhis but diners in the longer villous pubescence of the stem, 

 the more or less clasping leaves, less imbricated and not purple- 

 tinged bracts. In general habit and leaf-form it resembles some- 

 what A. Jessicae, but differs in the glabrous leaves and narrower 

 glabrous bracts. 



Idaho : Mountain meadows, valley of Traille River, Kootenai 

 County, Aug. 9, 1892, Sandberg, MacDougal, & Heller 877 (type, 

 in herb. N. Y. Bot. Gard.). 



Aster subcaudatus sp. nov. 



Perennial, with a creeping rootstock ; stem 3-6 dm. high, more 

 or less purple, glabrous below, with villous or pilose peduncles 

 and lines above ; lower leaves petioled, 1-2 dm. long ; blades lance- 

 olate, 4-10 cm. long, often sparingly dentate with ascending sharp 

 teeth, dark green, glabrous, ciliolate on the margins ; upper leaves 

 sessile, linear-lanceolate, attenuate ; panicle open, with rather few 

 heads ; involucres 7-8 mm. high, about 1 2 mm. broad; bracts linear- 

 subulate, in 2 or 3 series, but nearly of the same length, attenuate, 

 the inner almost caudate, only slightly white-margined below ; 

 rays purple, about 1 cm. long ; achenes nearly glabrous. 



The type was determined as Aster Fremontii (?), but is evi- 

 dently distinct ; differing from that species as well as its relatives, 

 A. occidentalis, A. ciliomarginatus, etc., in the narrow attenuate 

 bracts. It is also a taller plant with a tendency to having dentate 

 leaves. If one should use Piper's key in his Flora of Washington 

 it would fall under A. occidentalis Nutt. The latter, as described 

 in Gray's Synoptical Flora, has well-imbricated bracts, of which 

 the outer are shorter; but neither the present species nor Gray's 



