80 PENTANDRIA — DICxYNIA. [Ilelosciadium. 



with 5 prominent waved or crenated ribs. Cal.-teeth obsolete, 

 peto/s obcordate. (Involucre of few leaves ; parti.il of Q leaves 

 on one side.) — Name, -/.uvuov, of Theophrastus, from y.uvog, a co7ie 

 or a top, whose whirling motion resembles the giddiness pro- 

 duced on the human constitution by the poisonous juice of this 

 plant. 



50. Physospermum. (Tab. III. f. 5.) Fruit of 2 ovato-glo- 

 Ibose lobes or carpels, each with 5 indistinct ribs, and single 

 vitfcB between them. Cal.-teeth evident. Pet. obcordate. (Invo- 

 lucre and partial involucre of many leaves). — Named from (puca, 

 a bladder, and g-ri^fjua, a seed, from the loose covering to the seed. 



51. Smyrniu^m. (Tab. III. f. 6.) Fruit of 2 nearly globose 

 lobes or carpels, each with 3 dorsal prominent sharp ribs, the 2 

 lateral ones obsolete. Several vitfcB in the interstices. Fet. lan- 

 ceolate or elliptical, with an inflected point. — Named from 

 c/jbvpa, synonymous with /j^vpoci, myrrh, from the scent of the 

 juice of some species. 



52. CicuTA. (Tab. III. f. 7.) Fruit rotundato-cordate of 

 2, almost globose lobes or carpels, with 5 broad flattened ribs, 

 and evident single rittcB in the interstices. Cal.-teeth acute. Pet, 

 obcordate. (Partial involucre of ma7iy leaves.) — Name ; Cicuta 

 ■was a term given by the Latins to those spaces between the 

 joints of a reed of which their pipes were made; and the stem 

 of this plant is equally formed of hollow articulations. 



53. .ipiUM. (Tab. III. f. 8) 7^r«z7 roundish-ovate,'didymous. 

 Carpels with 5 slender ribs, with vittcB in the flat interstices. 

 Cal.-teeth obsolete. Pet. roundish, entire, with a small involute 



point. (Involucres 0) Name, apon, tvater, in Celtic, from the 



places where the plant grows. 



54. Petkoselinum. (Tab. III. f. 9.) Fruit ovate. Carpels 

 with 5 slender ribs, and vitfa; in the interstices. Cal.-teeth obso- 

 lete. Pet. roundish, with a narrow incurved point. (Involucre 

 of feiu, partial of many, leaves). — Name '-iTooQ, a sto7ie ; being 

 a native of rocky or stony places. 



55. Tri'nia. (Tab. III. f. 10.) Dicecious. Fruit ov:ite. Car- 

 pels with 5 prominent ribs, and single vitlce beneath them. Cal. 

 teeth obsolete. Pet. of the barren jl. lanceolate with a narrow in- 

 volute point ; of \\\e fertile o\?i.\.^, with a short inflected point. — 

 Named in honour of Dr C. B. Trinius, a learned Russian bo- 

 tanist, author of " Species Graminum," etc. 



56. Helosciadium. (Tab. III. f. 11.) Fruit broadly ovate 

 or oblorg. Carpels with 5, slender, prominent ribs, with single 

 vitta; in the interstices. Cal.-teeth often obsolete. Pet. ovate, ob- 

 tuse with an apiculus. — Name Woe, a marsh, and c/./.i^w, an 

 %unbcl. 



