. Lectures on the evolution of plants. Botany; Plants. ANGIOSPEKM^ 185 complicated, is found in a number of aquatic forms allied to Naias, and also occurs in some of the terrestrial types among the aroids. In the latter (Fig. 45, A-C), while the individual flowers are often of the simplest. Fig. 45 (Lower Monocotyledons). — A, female inflorescence of the Indian turnip (Arisaema), the enveloping bract cut avray at the base to show the inconspicuous flowers, yi; B, a single flower cut longitudinally to show the OTUles, o; st, the papillate stigma; C, a group of male flowers, each consisting of f
. Lectures on the evolution of plants. Botany; Plants. ANGIOSPEKM^ 185 complicated, is found in a number of aquatic forms allied to Naias, and also occurs in some of the terrestrial types among the aroids. In the latter (Fig. 45, A-C), while the individual flowers are often of the simplest. Fig. 45 (Lower Monocotyledons). — A, female inflorescence of the Indian turnip (Arisaema), the enveloping bract cut avray at the base to show the inconspicuous flowers, yi; B, a single flower cut longitudinally to show the OTUles, o; st, the papillate stigma; C, a group of male flowers, each consisting of four stamens ; D, two plants of duckweed (Lemna), a minute floating aroid; Jl, the inflorescence consisting of two male and one female flower; E, the female flower cut longitudinally; F, the male flower, consisting of a single stamen ; G, longitudinal section of the em- bryo of Naias, showing the characters of the typical monocotyledonous embryo; the cotyledon is terminal, and the stem-apex, st, of lateral origin; r, the root; sus, suspensor; H, male flower of arrow-head (Sagittaria), consisting of a group of stamens surrounded by three white petals, p, and three sepals, s; I, section through the head of separate carpels, car, from the female flower; J, inflorescence (spike- let) of a grass (Dactylis); the lowest flower has the three stamens, and the two feathery stigmas protruding; K, a separate flower of Dactylis, consisting of a single carpel and three stamens in the axil of the bract, p; at the base of the carpel are the two small bracts (lodicules), 2. description, they are usually aggregated to form a com- pact, elongated inflorescence, the spadix, which may reach a large size and be very conspicuous, especially when, as often happens, it is surrounded by a showy bract, as in the common " calla lily " or some species of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and ap
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Keywords: ., bookcentury1900, bookdecade, booksubjectbotany, booksubjectplants
