. The natural history of plants. Botany. 294 NATURAL HISTORY OF Fig. 270. Long. sect. of flower (-1). Fig. 271. Long, sect, of fruit. and Gassipourece have been given. The flowers are regular, with a receptacle in the form of a shallow cup, bearing on its margin five valvate and slightly reduplicate sepals, and five alternate petals, spoon-shaped at the base, with a limb divided into unequal lobes. ^ The perigynous stamens are inserted on the receptacle within the petals; they are formed Macarisia lanceoiata. oach of a free filament and an introrse bilo- cular anther, dehiscing by two
. The natural history of plants. Botany. 294 NATURAL HISTORY OF Fig. 270. Long. sect. of flower (-1). Fig. 271. Long, sect, of fruit. and Gassipourece have been given. The flowers are regular, with a receptacle in the form of a shallow cup, bearing on its margin five valvate and slightly reduplicate sepals, and five alternate petals, spoon-shaped at the base, with a limb divided into unequal lobes. ^ The perigynous stamens are inserted on the receptacle within the petals; they are formed Macarisia lanceoiata. oach of a free filament and an introrse bilo- cular anther, dehiscing by two longitudinal clefts, inflexed in the bud. Five are super- posed to the petals, and five, somewhat shorter, alternate; they are separated from each other by an equal number of tongues be- longing to the disk. The gyneecium, somewhat restricted at the base, is inserted at the bottom of the receptacular cup, but entirely free.' It is composed of an ovary with five cells,^ superposed to the petals, surmounted by a style slightly capitate and stigmatiferous at the summit. In the internal angle of each cell is found a placenta supporting two collateral, descending, incompletely anatropous ovules, with micro- pyle exterior and superior. The fruit is a loculicidal capsule finally dividing above into ten pannels and setting free ten (or less) com- pressed seeds, surmounted by a long vertical membranous wing, and enclosing, in the centre of a fleshy albumen, an elongate embryo, with oblong cotyledons and superior radicle. Macarisia consists of shrubs from Madagascar. The leaves are opposite, petiolate, accom- panied by interpetiolate stipules, with entire or dentelate, penni- nerved limb. The flowers, in the axil of the leaves, are in compound cymes, with articulate pedicels accompanied by two lateral bracteoles. Two species ^ are known. Gassipourea (fig. 272-274) comprises plants from tropical America, the flower of which is nearly the samek-in construction as that of 1 Imbricate tetwe
Size: 2048px × 1220px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1871
