An Introduction to BotanyLongman, 1839 - 594 páginas |
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Página 242
... plumule and radicle are growing beyond it . 187. Section of a Grass seed germinating ; the plumula is directed upwards like a slender horn ; the cotyledon is at its base , adhering to the albumen . 188. Seed of Commelina germinating ...
... plumule and radicle are growing beyond it . 187. Section of a Grass seed germinating ; the plumula is directed upwards like a slender horn ; the cotyledon is at its base , adhering to the albumen . 188. Seed of Commelina germinating ...
Página 250
... plumule ( or gemmule ) ( fig . 2. c . ) ; from which is also by some distinguished the cauliculus or neck ( scapus , scapellus , or tigelle ) . Mirbel admits but two principal parts ; viz . , the cotyledons , and what he calls the ...
... plumule ( or gemmule ) ( fig . 2. c . ) ; from which is also by some distinguished the cauliculus or neck ( scapus , scapellus , or tigelle ) . Mirbel admits but two principal parts ; viz . , the cotyledons , and what he calls the ...
Página 251
... plumule , and the horn - like prolongation is the radicle . In Castanea nearly the same structure exists , except that the radicle , instead of being curved and exserted , is straight , and enclosed within the projecting base of the two ...
... plumule , and the horn - like prolongation is the radicle . In Castanea nearly the same structure exists , except that the radicle , instead of being curved and exserted , is straight , and enclosed within the projecting base of the two ...
Página 252
... plumule , instead of cotyledons . An inequality of cotyledons is the most unusual circumstance with dicotyledons , and forms a distinct approach to the struc- ture of monocotyledons : it occurs in Trapa and Sorocea , in which they are ...
... plumule , instead of cotyledons . An inequality of cotyledons is the most unusual circumstance with dicotyledons , and forms a distinct approach to the struc- ture of monocotyledons : it occurs in Trapa and Sorocea , in which they are ...
Página 254
... plumula is naked ; and monocotyle- dons endoptiles , because their plumule is enclosed within the cotyledon ; but there seems little use in these proposed changes , which are , moreover , as open to objections as the terms in common use ...
... plumula is naked ; and monocotyle- dons endoptiles , because their plumule is enclosed within the cotyledon ; but there seems little use in these proposed changes , which are , moreover , as open to objections as the terms in common use ...
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Palavras e frases frequentes
Adolphe Brongniart albumen anther apex appears axis bark base become body botanists Botany bracts branches buds bundles called calyx Cand Candolle carbonic acid carpels cause cavity cells cellular tissue centre chalaza character cloth colour common consists containing corolla cotyledons cyclosis developement dicotyledons direction disk Dutrochet Edition embryo epidermis exist extremity fibres filament fleshy flowers fluid foramen fruit glands grains green growing hairs hilum inches integument kind latex layers leaf leaflets leaves light Linnæus lobes Loudon margin matter medullary rays membrane Mirbel monocotyledons nature nitrogen nucleus observed organs ovarium ovary ovule oxygen parenchyma pericarp petals petiole pistil pith placenta plants Plate plumula pollen pollen tube produced quantity radicle Raphides remarked roots round seeds separate side species specimens spiral vessels stamens stem stigma stomates structure substance surface term terminating tion tree tubes vascular vegetable veins wood woody tissue yellow