coltivazione del cotone 289
attempts this cotton has always turned out, in my hands an annnal plant. shall fllrther remark that'wh ^
pted to preserve lt ln hothonses it did not live any mero there, whereas, the species truly ligne0us and arborescent, such as Gossypium vitifolium, Gossypium Barbadense, Gossypium r(ligiosum, Gossypium molle, which we have cultivated forni many years in the Royal Botanical Garden, mayt here be seen to have reached the state of small trees, with the sole assi sta nce of a temperate stove. For ali these consi-derations, I am inclined to believe that the Siam cotton is an annual, or, at most, a biennial plant; but always her-baceous, and not ligneous in the sense which the botaoist attaches to this quality.
Finally, it appears to me useful to quote the brief de-scription which Tenore has given in Latin of these two species:
« Gossyph herbŕcei et Gossypii siamensis diagnoses et differentiae.
« 1. Gossypium herbaceum. Caule herbaceo piloso (subpedali), foliis pubescentibus (pallide virentibus subtus uni-glandulosis) 3 vel 5 lobatis, lobis ovalibus, rotundatis cum acumine, sinu excavatis, calycis exterioris foliolis multifědis, corollis paullo brevioribus, petalis basi maculatis, capsulis subrotundis (8-10 lin. in majori diametro), lana sordide alba, seminibus subrotundis lanugine griseo-fusca arcte adheren-tibus.
« A Gossypio indico differt seminibus minime nudis ni-gerriinis, ac foliorum lobis ovalibus nec triangularibus; A Gossypio siamense differt seminibus minime viridibus, lana griseo-alba, petalis maculatis, foliorum lobis non triangularibus, necnon capsularum et totius plantae parvitate.
« 2. Gossypium siamense; caule herbaceo hirsuto (2-3 pedali) foliis pubescentibus obscure virentibus subtus uniglan-dulosis, 3 vel 5 lobatis, lobis triangularibus acuminato, sinu acutissimo, calycis exterioris foliolis multifědis, corollis ěm-maculatis, duplo brevioribus, capsulis ovalibus cuspidata . (20-24 lin. in majori diametro) lana sericea, seminibus ovatis lanugine virescente arcte adhaerentibus.
G. Devincenzi Opere Complete. Voi. L
Pagina
