. The natural history of plants. Botany. 145 Asteriseium {Qi/mnophyton) robustum. the Andean and antarctic regions of America, woody at the base, rigid, with 3-5-sect or 3-5-fid leaves, often spinescent, with petioles often dilated to scarious sheaths. The flowers, not unfrequently unisexual, are in simple umbels. Hermas, from the Cape, is analo- gous to Mulinum. It has its fruit, succeeding flowers whose sepals are well developed and whose petals resemble staminal filaments. They are herbs with resetted, entire, hairy or woolly leaves, and with long simple or ramifie
. The natural history of plants. Botany. 145 Asteriseium {Qi/mnophyton) robustum. the Andean and antarctic regions of America, woody at the base, rigid, with 3-5-sect or 3-5-fid leaves, often spinescent, with petioles often dilated to scarious sheaths. The flowers, not unfrequently unisexual, are in simple umbels. Hermas, from the Cape, is analo- gous to Mulinum. It has its fruit, succeeding flowers whose sepals are well developed and whose petals resemble staminal filaments. They are herbs with resetted, entire, hairy or woolly leaves, and with long simple or ramified axes terminating in umbels appa- rently compound. It should be observed that in these two genera, as also in the three following, the distribution of the primary ridges is such that the median and the two intermediaries are dorsal, while the two lateral, instead of being marginal, are relegated (sometimes very far) to the interior face of the mericarp., Huanaca and Diposis are also closely allied to Mulinum. In the latter, of which a genus Asteriseium has been made, the leaves are those wrongly called radical, lobed or variously divided, and the inflorescence is a simple many-flowered umbel with an involucre of small bracts. The fruit is much compressed perpendicular to the partition, similar to that of Mu- linum, with a narrow commissure and mericarps dorsally concave. Gymno- phyton (fig. 168) is Asteriseium whose hard branched axe& are without true leaves; but the inflorescences are um- bels in which the interior flowers are fertile and the exterior male with longer pedicels. The true Diposis, such as D. saniculcefolia, is to the preceding what Mieroplfiura is to other genera of Hydrocotyle. In fact the ramified inflorescences bear, below a female flower of sessile fruit, two lateral pedicels which terminate in a flower generally male or sterile. It is moreover a glabrous herb, with radical divided leaves and disklike carpels. All these plants inhabit extratropical Sout
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1871
