Hab. «. Canada. Pursh; Mrs Percival; to the Saskatchawan and Great Slave Lake. Dr Richardson.
Drummond.—/3. Marshy places of the Saskatchawan. D r Richardson. Drummond. N. W. America,
about Fort Vancouver and Walla-wallah, Tolmies and Straits of De Fuca. Dr Scouler.
9. p . Persicaria (L .); annuum, floribus 6-aut 8-andris, di-aut-trigynis, achenio lenticular]
aut triquetro calyce abscondito angulis obtusis faciebus lsevibus, calyce 4-aut
5-parti to, spicis ovato-oblongis s. sublinearibus, bracteis turbinato-infundibuliformibus
parvis, ochreis truncatis, foliis lanceolatis petiolatis ssepe macula atra semilunari v.
triangulari medio notatis. Meisn. Polyg. p. 68.—P. Pennsylvanicum. L .?—p. lapathi-
folium. L .—E. Bot. t. 1382__y. minus; spicis angustioribus.
H ab. a. Lake Huron, to the Saskatchawan and Hudson’s Bay. D r Richardson. Drummond..—a. and
0. N. W. C. of America. Douglas. Tolmie.—y. Saskatchawan to Great Bear Lake. Dr Richardson.
10. P . Hydropiper. L .—E. Bot. t. 989. Ph. Am. l.p . 238— P. Mite. Ell.—P. hydro-
piperoides. Mx.
H ab. Canada to the Saskatchawan. D r Richardson. Drummond.
11. P . Virginianum (L .); perenne, floribus 5-andris digynis, calyce 4-partito, achenio
pyriformi compresso majusculo laevi, spicis virgatis subsimplicibus longis, ochreis brac-
teisque truncatis ciliatis angustis, foliis ovatis acuminatis cauleque erecto hirsutis. Meisn.
Polyg. p . 81. Ph. Am. l.p . 270.
H ab. Canada. (Ph.) D r Holmes.
§ 6. Aviculabia.
12. P . aviculare. L .—E. Bot. t. 1252. Ph. Am. l.p . 269.
H ab. Throughout Canada, to lat. 65°, frequently with larger foliage and more erect stems. (P. erectum,
Willd.)' Newfoundland and Labrador. D r Morison. Miss Brenton. Sitcha. Bongard (sub nom. P.
buxifolii, Nutt.). N. W. America. Douglas. Tolmie.— k most variable plant, from two inches to a foot
or more in height or length, for the stems are sometimes erect, sometimes procumbent. Leaves from 2 or 3 lines
to 2 inches long. Nuttall says his P. buxifolium (P. avic. latifol. Mx.) has 5 stamens, not 8, as is usual.
13. P . Paronychia (Cham.); suffruticosum, inflorescentia dense capitata, floribus
axillaribus in apicibus confertis magnis 8-andris, stylo germinis longitudine, stigmatibns
3 filiformibus brevibus, achenio lanceolate triquetro tevi, foliis lineari-lanceolatis margine
revolutis, nervo subtus prominente canaliculate utrinsecus hirto, ochreis basi vaginantibus
longitudine foliorum. Cham, et ScMecht. in lAmuna, 3. p. 62. Hook, et Am. in Bot. of
Beech. Bay. p. 158.—P. confertiflorum. Dough met.
H ab. N. W. America, in the Band of the sea-shore from California (Ckamisso, Bccchey), to the Straits
of De Fuca. Mr Mamies. Douglas.—A remarkably fine and very distinct species, discorered by Menzies
during the voyage of Captain Vancouver. Flowers forming a large dense capitate Bpike— The same, or a
very nearly allied species, was fonnd by Mr Drummond at Apalachicola in West Florida.
14,. P. tenue (Mich.); floribus axillaribus sessilibus solitariis majusculis, achenio
acutangulo faciebus ovatis medio sublsevibus nitidis versus angulos puncrtato-rugulosis,
ochreis capillaribus deciduis, foliis lineari-filiformibus acutissimis (superioribus floriferis
sensim minoribus bracteiformibus), caule herbaceo erecto dichotomo, ramis elongatis
spiciformibus. Meisn. Polyg. p. 91. Ph. Am. 1. p. 270__P. filiforme. Bart.—P. linifolium.
Muhl.—Spreng.
H ab. Canada. (PA.) Sandy banks of the Saskatchawan. Drummond. -North W. America. Douglas.
Walla-wallah River, where the small annual root is eaten by the natives.—6 inches to a foot high, stiff and
wiry.
15. P. coarctatum (Dougl. mst.); annuum dichotomum erectum v. diffusum, foliis
linearibus vel lineari-lanceolatis acutis marginibus revolutis, ochreis basi vaginantibus
folio brevioribus, floribus trigynis axillaribus in foliis superioribus coarctatis, achenio
ovato-trigono minutissime punctato.— P. lineare. Menz. mst.—a. floribus folio brevioribus.
—fi. floribus folio longioribus.
H ab . N. W. America. Menzies. Dr Scouler. On the sandy barrens of the Columbia and its branches,
and on the higher branches of the Multnomak. Douglas.—P. Prairies at Nusqually Bay, N. W. America.
Tolmie.—This seems a very distinct species of the “ Avicularia ” section, and to be wholly confined to
the Pacific side of America. Stems from 3 inches to a foot long, slender and wiry.
§ 7. PoLYGONELLA. Nutt.
16. P . articulatum (Willd.); erectum ramosum rigidum 8-andrum trigynum, foliis
parvis linearibus, ochreis truncatis, pedunculis terminalibus racemosis articulatis, bracteis
ochreiformibus, floribus nutantibus 5-sepalis. Ph. Am. 1. p. 272.
H a b . Canada. (Ph.) About the Saskatchawan. Dr Richardson. Drummond.—A very remarkable
species, which Meisner, as well as Michaux, seem to think should form a distinct genus.
5. ERIOGONUM. Mich.
Involucrum tubulosum, campanulatum vel cyathiforme, vix angulatum, subsequaliter
6-dentatum, multiflorum. Receptaculum bracteolis intra pedicellos instructum. Peri-
anthia exserta, profunde 6-fida. Benth. in Linn. Trans, v. 17. p. 407.
§ 1. Umbellata. Benth.
1. E. sphoerocephalum (Dougl. mst.); caule ramoso folioso, foliis fasciculatis verticilla-
tisve oblongis basi angulatis subtus albo-lanatis, pedunculis subsimplicibus, involucro sub-
solitario late campanulato tomentoso multifloro, perianthiis extus sericeo-pilosis. (T ab.
CLXXV.)—Benth. 1. c. p. 407.
H ab. Common on the Columbia River, on rocks of the “ Stony Islands,” and Priest’s Rapid. Douglas.
—A small shrub, with leafy branches, and capitate umbels of yellow flowers.
T a b . CL XXV. E r io g o n um sp el er o c e ph a l um . Fig. 1, Involucre with flowers; ƒ. 2, Single flower; ƒ. 3,
Pistil:—magnified.
2. E. flavum. (Nutt, in Eras. Cat.) ; foliis ad basin caulis approximatis spathulato-
obovatis oblongisve subtus vel utrinque albo-lanatis, pedunculo apice breviter umbellato,
involucris ad apices radiorum solitariis late campanulatis lanatis multifloris, perianthiis
sericeo-villosis. Benth. 1. c.p . 408.—E. sericeum. Ph. Am. l.p . 277.