. The natural history of plants. Botany. UMBELLIFERM. 107 Meum (Liffusticum) alatum. face. The vittse are indefinite in number. The involucres are nil or reduced to a small number of bracts, and the bracteoles of the involucel are variable, often inconsiderable, in number, and narrow, setaceous. To this genus as sections we refer: Bonannia, whose fruit, rather more compressed, has seeds with flat face, vittse indefinite in number, often slightly marked, and whose involucres and involucels are formed of short bracts; Silaus, having the fruit of Meum atha-. manticum, with indistinct vittse, very
. The natural history of plants. Botany. UMBELLIFERM. 107 Meum (Liffusticum) alatum. face. The vittse are indefinite in number. The involucres are nil or reduced to a small number of bracts, and the bracteoles of the involucel are variable, often inconsiderable, in number, and narrow, setaceous. To this genus as sections we refer: Bonannia, whose fruit, rather more compressed, has seeds with flat face, vittse indefinite in number, often slightly marked, and whose involucres and involucels are formed of short bracts; Silaus, having the fruit of Meum atha-. manticum, with indistinct vittse, very fine, or very wide, though very thin on the facial side, involucres and in- volucels similar to those of Meum; Ligusticum (fig. 102) whose vittse are numerous, sometimes indistinct, and whose fruit has a flat or slightly concave face; Schultzia, having the fruit oiLiguS' ticwm with well deve- loped involucres and involucels of entire or divided bracts ; Siler, whose fruit similar to that of Ligusticum, has solitary vittse ; the invo- lucres and involucels are similar to those of Meum; Pleurospermum, whose vittse are solitary or geminate, and whose seeds have a flat or more or less concave face; the bracts of the involucre and involucels are entire or divided, nearly hke those of Schultzia; Gyathoselinwrn^ having the fruit of Ligusticum, but the b;racts of the involucel united at the base, as in certain Seseli; Trochiscanthes, whose fruit is that of Meum, with numerous vittse, but the umbels are united in a sort of ramified and verticillate cluster ; the petals have an elongate claw ; finally Selinum and Cortia, having the fruit of Meum or Ligusticum, rather short, soUtary vittse in each furrow, and marginal ridges developed into rather wider wings. In Cortia, Indian herbs, having the latero-dorsal ridges more developed. Fig. 102. Trans, sect, of fruit (i,°).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabi
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1871
