EUb. On gravelly soils, near Fort Vancouver on the Columbia, North-West America. Douglas. Dr.
Scoider.—The young fruit is drawn from a recent plant which flowered in the Garden of the Horticultural
Society. The flowers of the native specimens appear to be all abortive.
Tab. XCIII. S. leiocarpum. Fig. 1, Male flower; fig. 2, Abortive pistil of the same; fig. 8, Umbellule
of immature fruits; fig. 4, Fruit (immature); fig. 5, Section of do. -.—magnified.
2. S. tritematum ; foliis longe vaginantibus ternatis foliolis integris seu bi-triternatis elongates
lineari-lanceolatis linearibusve integerrimis petiolulatis, caule inferne prsecipue folioso,
umbella composita, radiis universalibus subaequalibus, umbellis capitatis, floribus dioicis seu
polygamis? fructu (immaturo) oblongo subcylindraceo, mericarpiis jugis 5 elevatis acutis
notatis, involucris involucellisque nullis. (T ab. XCIV.) Pursh. FI. Am. v. 1. p. 197. De
Cand. Prodr. v. 4. p. 146.
Hab. Columbia River. M. Lewis. Common on the dry gravelly soils near Fort Vancouver. Douglas.
Dr. Scouler.—Cultivated in the Garden of the Horticultural Society, in 1828, from seeds sent home by Mr.
Douglas.—This has much of the habit of the last species; but the leaves and young fruit are very different.
The root is fusiform. The petals involute, entire. Styles divaricated. Calyx-teeth obsolete. Fruit with
five sharply keeled primary ridges.
Tab. XCIV. S. tritematum. Fig. 1, Portion of a leaf; fig. 2, Flower; fig. 3, Immature fruit; fig. 4,
Section of do.:—more or less magnified.
3. S. divaricatum; caule dichotomo folioso, foliis petiolatis breve-vaginantibus bi-tri-
pinnatifidis laciniis lineari-oblongis acutis brevibus, pedunculis lateralibus terminalibusque,
umbellarum radiis asqualibus, involucellis lineari-subulatis, fructu subrotundo-ovato denti-
bus calycinis coronato, mericarpiis asperis costis 5 elevatis multivittatis.—Pursh, FI. Am.
v. 2. p . 732. Sims, Bot. Mag. p. 1742. Nutt. Gen. Am. v. 1. p. 194. De Cand. Prodr. v. 4.
p. 146.
Hab. About Carlton House upon the Saskatchawan. Drummond. Douglas.—The root is large, tuberous,
subfusifonn. Stems about a span high. Flowers yellow. Fruit slightly laterally compressed, ovate, rough,
with small elevated points; each achenium or mericarpium is crowned with five conspicuous broadly subulate
teeth, the surface marked with five prominent elevated lines, two of which are marginal. The styles are
deciduous. The carpophorum has two short branches. The vittee are numerous, and appear to anastomose
very frequently, and they abound in a powerfully aromatic oil.
13. CNIDIUM. Cusson.
Calycis margo obsoletus. Petala obovata emarginata cum lacinula inflexa. Fructus
sectione transversali subteres. Mericarpia jugis 5 asqualibus alatis, ala submembranacea,
lateralibus marginantibus. Vallecula l-vittatas. Commissura bivittata. Semen semiteres.
Albumen bine applanatum.—Herbas perennes rarius suffirutices. Folia pinnati-aut ternati-
secta, segmentis multifidis, lobis linearibus. Involucrum varium, frivol ucella polyphylla.
Flores aJJn aut rosei. Proxime accedit ad Seseli, sed jugis fructus membranaceo-alatis et
calycis margine obsolete differt. DC.
1. C. Canadense; caule angulato flexuoso, foliis bipinnatisectis lucidis segmentis multi-
partitis, laciniis lanceolatis, involucro utroque oligophyllo. DC.—Spreng. in Schultes Syst.
Veget. v. 6. p. 415. De Cand. Prodr. v. 4. p. 153. Torrey, FI. o f Un. St. v. 1. p. 306.__
Selinum Canadense. Mich. Am. v. 1. p. 155. Pursh, Fl. Am. v. 1. p. 192. Nutt. Gen. Am.
v. 1. p. 180.—Apium bipinnatum. Walt. Carol, p. 115. (fide Pursh.) DC.
Hab. Mouth of the St. Lawrence, Canada. Michaux.—Of this plant, I regret to say, I know nothing.
Pursh speaks of it as having white flowers, and as inhabiting the mouths of large rivers from Canada to
Carolina.
14. THASPIUM. Nutt.
Calycis. margo 5-dentatus. Petala elliptica in acumen longum inflexum attenuate.
Fructus a latere non contractus subellipticus. Mericarpia convexa jugis 5 alatis, alis sub-
æqualibus, valleculis' striatis 1-vittatis. Commissura 2-vittata. Semen teres.—Herbæ
perennes Boreali-Americana. Involucrum nullum. Involucellum 5-phyllum \-laterale.—
Genus a Smyrnio et Zizia distinctissimum, Cnidio evidenter ex fructu affine, sed distinctum
calyce 5-dentato, petalis non emarginatis, involucellis triphyllis et habitu. DC.
1. T. actaifolium; foliis biternati-sectis, segmentis ovalibus æqualiter dentatis, umbellis
subverticillatis, lateralibus sterilibus. DC.—Nutt. Gen. Am. v. 1. p. 197. De Cand. Prodr.
v. 4. p. 154.— Ligusticum actæifolium. Mich. Am. v. 1. p. 166. Pursh, Fl. Am. v. 1.
p. 193.
Hab. Near Tadoussacb, on the banks of the St. Lawrence, Canada. Michaux.
15. LIGUSTICUM. Koch.
Calycis margo 5-dentatus vel obsoletus. Petala obovata acuta emarginata cum lacinula
inflexa,- brevissime unguiculata. Fructus sectione transversali subteres vel a latere parum
compressus. Mericarpia jugis 5 argutis subalatis æqualibus, lateralibus marginantibus.
Vallecula et commissura multivittatæ. Semen subsemiteres.—Herbæ pleraque perennes.
Folia decomposita aut tematisecta. Involucrum varium; involucella polyphylla. Flores
albi. DC.
1. L. Scoticum; caule simpliciusculo striato, foliis biternatis opacis, segmentis subrhombeo-
ovatis dentato-serratis, involucris lineari-lanceolatis 5-7-phyllis. DC.—Linn. Sp. PI. p. 359.
Engl. Bot. t. 1207. Mich. Am. v. 1. p. 157. Pursh, Fl. Am. v. 1. p. 193. Torrey, FI. o f
Un. St. v. 1. p. 313. Cham, et Schlecht, in Linnaa, v. 1. p. 390. De Cand. Prodr. v. 4. p.
157. Hook, et Am. in Bot. o f Beech. Voy. v. l .p. 115. etp. 125.
Hab. Shores of the St. Lawrence. Michaux. Mrs. Sheppard. Labrador. Dr. Morrison. Newfoundland.
Miss Brenton. Mouth of the Columbia. Douglas. Observatory Inlet. Dr. Scouler. Behring’s Straits.
Chamisso. Messrs. Lay and Collie in Capt. Beechey’s Voyage.
16. CONIOSELINUM. Fisch.
Calycis margo obsoletus. Petala obcordata aut obovata cum lacinula inflexa. Styli
demum divergentes reflexi. Fructus a dorso compressiusculus aut convexus. Mericarpia
jugis 5 alatis, lateralibus subduplo latioribus marginantibus. Vallecula laterales 3-vittatæ,
dorsales sæpe 2-vittatæ. Commissura 4-8 vittata, vittis inæqualibus. Carpophorum bipar-
titum. ■' Semen hinc planum.—Herbæ biennes glabra. Caules ramosi fistulosi. Folia
bipinnatisecta, segmentis pinnatipartitis, lobis oblongo-linearibus. Umbellæ terminales
multiradiata, involucro nullo aut oligophyllo. Involucelli foliola 5-7 lineari-subulata umbella
vol. i. 2 L