264 TTMBELLTFER^. [Cnidium. 



Hab. On gravelly soils, near Fort Vancouver on the Columbia, North -West America. Douylaa. Dr. 

 Scouler. — The young fi-uit 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; Jig, 2, Abortive pistil of the same; Jig. 3, Umbellule 

 of immature fruits; Jig. 4, Fruit (immature); Jig. 5, Section of do. : — magnijied. 



2. 5. triternatum ; foliis longe vaginantibus ternatis foliolis integris seu bi-triternatis elon- 

 gatis lineari-lanceolatis linearibusve integerrimis petiolulatis, caule inferne praecipue folioso, 

 umbella composita, radiis universalibus subaequalibus, umbellis capitatis, floribus dioicis seu 

 polygamis? fructu (immaturo) oblongo subcylindraceo, mericarpiis jugis 5 elevatis acutis 

 notatis, involucris involuceliisque nullis. (Tab. XCIV.) Pursh, FL Am. r. 1. p. 197. De - 

 Cand, Prodr. v. 4. p, 14-6. 



Hab. Columbia River, il/, 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 dlflerent. 

 The root is fusiform. The petals involute, entire. Styles divaricated. Calyx-teeth obsolete. Fruit with 

 five sharply keeled primary ridges. 



Tab. XCIV. S. triternatum. Fig, 1, Portion of a leaf; Jig. 2, Flower; Jig. 3, Iramatuie fruit; Jig. 4, 

 Section of do. : — more or less magnijied. 



3. S. divaricatum ; caule dichotomo folioso, foliis petiolatis breve-vaginantibus bi-tri- 

 pinnatifidis laciniis lineari-oblongis acutis brcvibus, pedunculis lateralibus terminal ibusque, 

 umbellarum radiis aequalibus, involucellis lineari-subulatis, fructu subrotundo-ovato denti- 

 bus calycinis coronato, mericarpiis asperis costis 5 elevatis multivittatis. — Pursh, FL Arn, 

 V. 2. p. 732. SimSi BoL Mag. p. 1742. NutL Gen. Am. v. 1. p. 194, De Cand. Prodr. v. 4. 

 p. 146. 



Hab. About Carlton House upon the Saskatcbawan. Drummond. Douglas. — The root is large, tuberous, 

 gubfusiforra. 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 conspicnous broadly subulate 

 teeth, the surface marked ^vith five prominent elevated lines, two of which are marginal. The stj/le$ are 

 deciduous. The carpophorum has two short branches. The vitt(B are numerous, and appear to anastomose 

 very frequently, and they abound in a powerfully aromatic oil. 



13. CNIDIUM. Cksson. 



Calycis margo obsoletus. Petala obovata emarginata cum lacinula inflexa. Fructus 

 sectione transversali subteres. Mericarpia jugis 5 sequalibus alatis, ala submembranacea, 

 lateralibus marglnantlbus, Valleculm 1-vittatae. Commissura bivittata. Semen semiteres. 

 Albumen hinc applanatum. — Herba? perennes rarius suffrutices. Folia pmiati-aut ternati- 

 secta, segmentis multijidis, lohis linearihus. Involucrum varium, involucella polyphTjlla. 

 Flores albi aut roseL Proxime accedit ad Seseli, sed jugis fructus tnemhranaceo-alatis et 

 calycis margine ohsoleto differt. DC. 



1. C. Canadense; caule angulato flexuoso, foliis bipinnatisectis lucidis segmentis multi- 

 partitis, laciniis lanceolatis, involucro utroque oligophyllo. DC. — Spreng. in SchuUes Syst. 

 Veget. v. 6. p. 415. De Cand. Prodr. v. 4. p. 153. Torrey, Fl. of Un. St. v. 1. p. 306. 



