HiERAciuM. COMPOSITiE. 479 



entire, sessile or nearly so, hispid with spreading hairs; panicle compound ; 

 the erect peduncles and the (about 20-flowered) involucre more or less glan- 

 dular-hispid ; achenia columnar, not narrowed at the summit. — Hook..' Jl. 

 Bor.-Am. 1. p. 298. 



Nootka, and at the mouth of the Oregon, Dr. Scouler! On the Wahla- 

 met, Nuttall. — A foot high, clothed with fuscous or brownish bristly hairs 

 (distinctly denticulate under a lens), like those of H. longipilum, except that 

 they are much shorter and spreading. Heads small; the involucre sparing- 

 ly calyculate, clothed with short mostly glanduliferous hairs, or in some 

 specimens nearly glabrous. — We suppose that the specimen from Pennsyl- 

 vania, mentioned by Hooker, belongs to H. Gronovii. 



12. H. albiflorum (Hook.) : stem simple, naked and glabrous above, bear- 

 ing a compound corymb, leafy and his|)id near the base, like the petioles and 

 midrib of the leaves, with slender reflexed bristly hairs ; leaves lanceolate- 

 oblong, hirsute, entire; the lower tapering into a short petiole, the uppermost 

 small and sessile; peduncles short, divaricate, minutely bracteolate, nearly 

 glabrous; the scarcely calyculate involucre very sparingly hirsute with 

 slender bristly hairs ; achenia columnar, not narrowed at the summit ; 

 flowers white I-^i?ooA". .' ^. Bor.-Am. 1. p. 298 ; Nutt. ! in trans, Amer. 

 phil. soc. I. c. p. 446. 



Alpine woods in the Rocky Mountains, north of Smoking River, lat. 56°, 

 Drummond ! Also around Fort Vancouver, Oregon, Nuttall. — Stem 1-3 feet 

 high. Heads about as large as in H. venosum. 



X Obscure or little-known species. 



13. H.? Kalmii [lAu'a.) : stem erect, many-flowered ; leaves lanceolate, 

 tooihed ; peduncles tomentose. (Stem erect, smooth, narrower than in H. 

 Sabaudum. Leaves lanceolate, alternate, subsessile, small, naked, acumi- 

 nate, dentate with sharper spreading teeth than in any other species of the 

 genus. Peduncles alternate at the summit of the stem, commonly simple 

 and one-flowered, whitish-tomentose ; bracts few and sparse, linear. Flowers 

 small, terminal, erect.) Linn.! spec. 2. p. 804," not of Spreng. &c., neither 

 of Monnier (under the name of Sclerolepis), nor oi Less, (under the name of 

 Pachylepis.) 



Pennsylvania, Kalm. {v. sp. in herb. Linn.) — Heads and flowers about as 

 large as in Erigeron strigosum. Scales of the involucre narrowly linear, 

 glabrous, not rigid, plane, in a single series, with a few exterior and shorter 

 ones. Corolla apparently yellow. Receptacle naked ? Ovaries similar in 

 all the. flowers, somewhat turbinate, glabrous, not striate, neither rostrate nor 

 in the least attenuated at the summit. Pappus a single series of fragile 

 strongly denticulate-scabrous bristles, brownish-white. — It is singular that 

 this plant, if it were really collected in Pennsylvania, has never been met 

 with since the time of Kalm. The above particulars, which an inspection of 

 the original specimen enables us to add to tfie excellent general description of 

 Linnaeus, clearly show that this lost species has no affinity whatever with the 

 jilant which Monnier (we know not on what grounds) mistook for it, and de- 

 scribed under the name of Sclerolepis Kalmii {Ess. Hierac. p. 81, t. 4,/. D.), 

 and which is adopted by Lessing (Syn. Compos, p. 129) and DeCandoUe 

 {Prodr. 7. p. 98), under the name of Pachylepis. Monnier does not slate the 

 source whence his specimens were derived; but we are confident that his 

 plant (which is nearly allied to Zacintha and Pterotheca) is not of North 

 American origin, and therefore have not introduced it into our Flora. 



14. iy. ar£|-uiMm (Nutt.) : leaves and base of the stem clothed with long 

 reflexed hairs; stem smooth, paniculate, the branches divaricate, with long 

 naked and smooth pedicels; leaves oblong or oblong-lanceolate, all incisely 



