The Genera of South African Plants: Arranged According to the Natural System

Front Cover
A.S. Robertson, 1838 - Botany - 429 pages
0 Reviews

What people are saying - Write a review

We haven't found any reviews in the usual places.

Selected pages

Other editions - View all

Common terms and phrases

Popular passages

Page 321 - They are not confined to any one district, soil, or elevation, but abound from one end of the colony to the other, covering the ground in the months of September and October with a sheet of blossoms, that resemble nothing so much as a shower of gaudy butterflies.
Page 12 - Petals 4, cruciate, parallel ; the 2 outer, either one or both, saccate at the base ; the two inner callous and coloured at the apex, where they cohere and enclose the anthers and stigma. Stamens 6, in two parcels, opposite the outer petals.
Page 215 - Ovary free, sessile, plurilocular ; ovules one to two in each cell, pendulous ; style divided, rarely simple ; stigmas bifid or simple. Fruit fleshy, round or oval, the pericarp sometimes opening regularly. Seeds few ; testa membranous ; embryo straight, nearly in the axis of cartilaginous albumen ; cotyledons leafy ; radicle taper, next the hilum. Trees or shrubs, not lactescent, with alternate, exstipulate, coriaceous leaves. They are chiefly found in tropical regions, and many species are met...
Page vii - ... waited for intuitive knowledge. Sharp eyes and willing hands are the grand requisites for a botanical collector, and, if these be once set in motion, knowledge of affinities and structure will gradually follow as operations extend. Many of the most successful collectors of plants, by whose labours in all countries the science has been so extended and enriched, have been persons ignorant of, or but slightly acquainted with, botany at the time of their mission.
Page 21 - Seeds 00, usually enveloped in a pellicle formed by the withered pulp ; albumen fleshy, somewhat oily ; embryo straight, in the axis, with the radicle turned to the hilum, and therefore usually superior ; cotyledons flat, foliaceous.
Page 381 - Capsules in an early stage covered with a calyptra, tipped with a style (?), — and then often surrounded by a perianth or calyx, at length bursting the calyptra irregularly, and rising on a peduncle...
Page 29 - Ovarium formed by the union of several carpels round a common axis, either distinct or cohering : styles as many as the carpels, united or free, entire or cleft : stigmas as many, or twice as many, as the carpels.
Page 44 - Fruit a plurilocular capsule, pointed generally with the indurated base of the styles ; each loculament or cell more or less completely divided by a spurious dissepiment, arising from the dorsal suture, and opening by two valves at the apex. Seeds solitary in each spurious cell, compressed, pendulous ; albumen usually in small quantity, sometimes 0 ; embryo straight ; cotyledons flat ; radicle next the hilum. Annual and perennial plants, with exstipulate, simple, entire leaves, which are usually...
Page 121 - Sepals definite, usually 5, but varying from 4 to 8, more or less combined at the base, either cohering with the ovary, or distinct from it, equal or unequal, with a quincuncial or valvate (estivation.
Page 383 - lias a vacant portion in its centre, but the margin (which has a fluted appearance under a small magnifier,) consists of a number of parallel, linear-oblong, hyaline, hollow tubes, placed at small intervals from each other, those forming the angles of the scale being branched. Within these tubes are a profusion of globular, minute, orange bodies, (exactly similar to the sporules of other cryptogamic plants,) arranged in no order, and escaping on the least injury of the tubes. It is these little...

Bibliographic information