. The natural history of plants. Botany. LEOUMINOS^-PAPILIONACEJE. 213 coronanimi: imbricate in the bud. The petals form a papilionaceous corolla; the obovate or obcordate standard, reflexed on anthesis, tapers at the base, though seldom forming a distinct claw. The wings shorter than the standard, and sometimes very short, are obliquely- elongated, each supported on a short narrow claw, above which the base of the limb is produced into an auricle. The petals of the keel have also short claws, and are usually longer than the wings; the keel, obtuse at the apex, is curved or abruptly bent, and
. The natural history of plants. Botany. LEOUMINOS^-PAPILIONACEJE. 213 coronanimi: imbricate in the bud. The petals form a papilionaceous corolla; the obovate or obcordate standard, reflexed on anthesis, tapers at the base, though seldom forming a distinct claw. The wings shorter than the standard, and sometimes very short, are obliquely- elongated, each supported on a short narrow claw, above which the base of the limb is produced into an auricle. The petals of the keel have also short claws, and are usually longer than the wings; the keel, obtuse at the apex, is curved or abruptly bent, and as it were obliquely truncate along its inferior edge. The androceum consists of ten diadelphous stamens, the filaments of the nine anterior being united below, form- ing a cleft tube open behind ; the anthers are introrse, aU uniform. The sessile or shortly stipitate ovary contains a variable number of descending campyloptro- pous ovules, whose micropyles look upwards and outwards, is surmounted by a slender hollow style, abruptly inflexed, and ends in a little undilated stigma. The fruit (fig. 181) is a piano-compressed elongated pod, containing several seeds, and lomentaceous—, dividing transversely at maturity into as many indehiscent joints as there are seeds. Each joint represents a sort of achene. It is smooth or muricated, and contains a reniform exarillate exal- buminous seed, with an inflexed radicle. Iledysarum consists of perennial herbs, undershrubs, or more rarely shrubs. Some fifty species' are known from the temperate regions of Europe, North Africa, Asia, and NoAh America. The leaves are imparipinnate, with scarious stipules, but no stipels. The flowers form axillary racemes, and are themselves axillary each to a scarious or setaceous bract, and accompanied by two lateral bractlets placed some way up the pedicel, usually close against the flower. Next to Hedysarum come on the one hand Taverniera, Stracheya, Moersmannia, ALhagi, and Corethrodendron, which
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1871
