2. T. integrifolium ; foliis inferioribus obovato-spathulatis superioribus lineari-spathulatis
integris integerrimisque vel rarissime apice subtrifidis utrinque albo-lanatis.
Hab. With the preceding.—Although mixed with the foregoing species by Mr. Douglas, it must have
been so through inadvertence; for the two species are totally distinct in their foliage. With regard to the
genus of these plants, I cannot satisfy myself that they should be referred to Eriophyllum of Lagasca, a
native of South America, and of which the characters are most imperfectly detailed. The involucre in our
individuals is not monophyllous, assuredly; though from the dense covering of wool, it may have the appearance
of being so.
36. BLEPHARIPAPPUS. Nov. Gen.
Radius pauciflorus foemineus, corollis lato-cuneatis profunde trifidis. Palece pappi sub-8,
lineari-acuminatae, fimbriato-ciliatae. Rachis bracteolata.—Herbae annua, ramosa, America
Borealis; foliis alternis linearibus integris; capitulis terminalibus solitariis, radio albo;
involucri hamispharici foliolis uniserialibus aqualibus oblongis seu ellipticis; acheniis
pilosis.
1. B. glandvlosus; hispidus, foliis lato-linearibus superioribus involucrisque glandulosis,
glandulis nigrispedicellatis, pappi paleis elongatis basi longe pilosis, radii acheniis nudis calvis.
H ab. Common on the plains of the Columbia, in sandy soils, under the shade of Purshia and Artemisia.
Douglas.—6 to 8 inches high, vaguely branched, branches spreading; flowers nearly as large as those of Chrysanthemum
Leucanthemum. The achenise are davate, those of the ray are sheathed all round by the scariose
margins of the leaflets of the involucre, as in the following species, and are quite glabrous, black, and very
minutely dotted. Corolla with a few long hairs at the extremity. Stigmas of the florets of the disk linear,
long, recurved, glanduloso-pubescent, those of the ray very short.
2. B. scaber; foliis angusto-linearibus scabris, involucris subpubescentibus glandulis
pedicellatis nullis, acheniis omnibus villosis, pappi paleis breviusculis superne praecipue
fimbriato-ciliatis.
Hab. Sandy plains of the Columbia, among Purshia and Artemisia.—Branches more erect, and flowers
much smaller than the preceding. __ The stigmas of the disk appear considerably different, being short and
truncated, nearly glabrous, while the style upwards is very hairy and slightly incrassated.
37. HYMENOPAPPUS. VMerit.
Capitvlum homogamum. Palea pappi numerosae, elliptic«©, muticae, obtusae. Achenium
subulato-turbinatum. Stylus appendiculatus. Rachis tota ebracteolata.—Herbae America
Boreali indigence, albo-lanuginosa, foliis pinnatifidis, alternis ; capitulis corymbosis (vel solitariis)
odoratis, albido-incarnatis; foliolis coloratis. Less.
1. H. Douglasii; lana alba decidua tomentosus, ramis elongatis subcorymbosis, foliis
bipinnatifidis segmentis linearibus sinuatis, floribus solitariis involucri foliolis sub 20 linearibus
pubescentibus capitulo brevioribus, corollis filiformibus apice pilosis pappi paleis linearibus
vix longioribus.—H. scabiosaeus. Dougl. MSS.- apud. Herb. Hort. Soc. Lond. (non
UHerit.)
Hab. Common on the barren dry sandy grounds of the Columbia, from the “ Great Falls” to the Rocky
Mountains. Douglas.—1 to 3 feet high, copiously branched, the branches elongated so as all to reach nearly
the same level, and each terminated by a single rather large white flower. This is very different from the
H. scabioscsus, L’Herit. (Rothia Caroliniensis, Lam. HI. t. 667.) where the flowers are subcorymbose, the
leaflets of the involucre very broad, the upper part of the corolla campanulate, and the pappus extremely
short.
2. H. filifolius ; lana alba decidua tomentosus, ramis paniculatis sparsis, foliis bipinnatifidis
segmentis filiformibus elongatis integerrimis, floribus solitariis, involucri foliolis sub-12
ellipticis pubescentibus capitulo subbrevioribus, corollse tubo superne campanulato, pappo
brevissimo.—H. tenuifolius. Dougl. MSS. apud. Herb. Hort. Soc. Lond. (non Pursh.)
Hab. On the undulating arid grounds of the Columbia, near the Wallawallah, and on the banks of the
Spokan and Flat-head Rivers.—18 inches to two feet high, the stem loosely panicled above. This is quite
different from the H. tenuifolius of Pursh, of which I possess a specimen from Mr. Nuttall, gathered on the
Arkansa. That has a remarkably dense corymb of flowers, whereas here the branches form a lax terminal
panicle, each elongated extremity bearing a solitary flower. The pappus is extremely minute.
38. PICRADENIA. Nov. Gen.
Radius 8-10 florus, foemineus, corollis obovato-oblongis grosse tridentatis. Palea pappi
6-7 subimbricatae, ovatae, acuminatissimae, nudse. Achenium villosum. Rachis conica,
nuda.—Herba America Borealis, radice crassa perenni; foliis alternis lineari-filiformibus
rigidispinnatifidis, glanduloso-punctatis punctispellucidis ; capitulis terminalibus unicoloribus
Jlavis; corollis disci pracipue glandulis valde amaris tectis; involucri subhemispharici
foliolis imbricatis, externis basi coadunatis.—Nomen amarus, et «$»)», glandula: ob
glandulas amarissimas.
1. P . Richardsoni. (T ab. C V II I.)
Radix subfusiformis, lignosa, descendens, ramosa, superne divisa. Caules subspithamaei, erecti, rigidi,
glabri, striati, superne ramosi. Folia 3-4 uncias longa, lineari-filiformia, caulina pauca; omnia pinnatifida,
laciniis paucis, remotis, rarius iterum divisis, glanduloso-atque pellucido-punctatis, obscure unicostatis.
Pedunculi terminales, uniflori. Flos majusculus. Involucrum hemisphaericum, impresso-punctatum, glan-
dulosum, subpubescens; foliolis oblongis imbricatis, exterioribus inferne coadunatis. Rachis (seu recepta-
culurn) conica, carnosa, punctata, ebracteata. Flosculi radii ligulati, obovato-oblongi, lutei, tubo praecipue
glandulosi, apice dentibus 3 grossis; disci tubulosi, 5-dentati, flavi, glandulis valde amaris tecti. Antherce
subexsertae. Stigmata inclusa, breviuscula, apice incrassata et hirsuta. Achenium oblongum, superne
latius, pilosum praecipue apicem versus. Pappus paleaceus, paleis 6-7, erectis, ovatis, acuminatissimis,
membranaceis.
H ab. About Carlton House, on the Saskatchawan. Dr. Richardson.—Allied to Hymenoxys of Cassini,
in the nature of the pappus: but very different in the involucre and habit.
Tab. CYIII. P. Richardsoni. Fig. 1, Involucre; fig. 2, Section of do.; fig. 3, Floret of the ray; fig. 4,
Floret of the disk; fig. 5, Stigmas; fig. 6, Paleae:—magnified.
39. HELENIUM. Linn.
Capitulum radiatum, radio ?. Palea pappi aristatae, acuminate©. Achenium multifariam
pilosum. Stylus exappendiculatus. Rachis margine bracteolata.—Herb® Americana,
foliis linearibus, integris, puberulis, sape decurrentibus ; capitulis luteis, terminalibus, solitariis,
lingulis radii apice trilobis; involucris polyphyllis, uniserialibus; rachide convexa. Less.
1. H. autumnale; caule angulato, foliis lanceolatis serratis decurrentibus, disci corollis
5-fidis radii 3-5-fidis.—Linn. Sp. PI. p. 1120. Mich. Am. v. 2. p. 133. Pursh, FI. Am. v.
2. p. 566. Elliott, Carol, v. 2. p. 401. Hook. in Bot. Mag. t. 2994.