. A dictionary of the flowering plants and ferns. Botany. 574 RUBIACEAE and are frequently united to one another and to the petioles, so that a sheath is formed round the stem. The two slips.—one from each I. —that stand side by side are usu. united, and in the Galieae, to which the Brit. sp. belong, are leaf-like, and often as large as the ordinary 1.; a char, appearance is thus produced, the plants seeming to have whorls of 1.; and it is only by noting the axillary buds that a clue is obtained to the real state of affairs. The number of organs—1. and slips. —in a whorl varies from 4 upwards,
. A dictionary of the flowering plants and ferns. Botany. 574 RUBIACEAE and are frequently united to one another and to the petioles, so that a sheath is formed round the stem. The two slips.—one from each I. —that stand side by side are usu. united, and in the Galieae, to which the Brit. sp. belong, are leaf-like, and often as large as the ordinary 1.; a char, appearance is thus produced, the plants seeming to have whorls of 1.; and it is only by noting the axillary buds that a clue is obtained to the real state of affairs. The number of organs—1. and slips. —in a whorl varies from 4 upwards, according to the amount of ' fusion ' or ' branching' of the slips. The simplest case is a w'horl of 6, each leaf having 2 separate slips. ; if the slips, be united in pairs, a whorl of 4 resulls ; if each slip, be branched into Iwo, we gel a whorl of 10, and, if the cenlre pair of half-slips, on eilher side be uniled, a whorl of 8. Several are myrmecophilous (cf. Cecropia, Acacia), Myrme- codia, Cuviera, Duroia, Hydnophytum. Infl. typically cymose. Sol. lerm. fls. rare; small dichasia more frequenl; mosl common case a much branched cymose panicle. Fl. usu. g , reg., epig., 4- or 5-me- rous. K 4—5, epig., oflen almosl absent, usu. open in aestivation, some- times with one sepal larger lhan Ihe resl and brighlly coloured (Mussaenda, &.c.)', C (4—5), valvate, conv., orimbr.; A 4—5, all. wilh pelals, epipet; G (2) rarely (I—oo ), 2-1OC. wilh I—oo analr. Floral diagram of Asperula, ov. in each loc.; ov. erecl, pend., or after Eichler. horiz.; style simple; sligma capilale or lobed. Caps, (sepli- or loculi-cidal), berry or schizocarp. Embryo small, in rich endosp. Most have conspic. insecl-pollinaled fls. The Brit. sp. have small fls. with freely exposed or slighlly concealed honey, chiefly visiled by flies; many Irop. sp. have bee- and Lepidoplera-fls. with long tubes. Honey usu. secreted by an epig. neclary round base of style. He- leroslylism is common
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1919
