. Elementary botany [microform]. Botany; Botanique. â ji 154 DICOrVLEDONS Pf'-i I, lobed and divided into four chambers, each containing one ovule; style attached between the bases of the four lobes of the ovary. Fruit a schizocarp of from one to four nudets. Type: WHITE DEAD NETTLE ( album). Vegetative characters.âPerennial herb with a foursideH stern.^ Lea^-es opposite, exstipulate, with scalloned or '-like margins. Inllorescence.âEach iijfloresence which stands in the axil of a i-af is a dichasium with a terminal flower and two lateral one - branched :^ymes (rnonochasia). Flower (l
. Elementary botany [microform]. Botany; Botanique. â ji 154 DICOrVLEDONS Pf'-i I, lobed and divided into four chambers, each containing one ovule; style attached between the bases of the four lobes of the ovary. Fruit a schizocarp of from one to four nudets. Type: WHITE DEAD NETTLE ( album). Vegetative characters.âPerennial herb with a foursideH stern.^ Lea^-es opposite, exstipulate, with scalloned or '-like margins. Inllorescence.âEach iijfloresence which stands in the axil of a i-af is a dichasium with a terminal flower and two lateral one - branched :^ymes (rnonochasia). Flower (lig. 191) median-zygomor- phic, ^, cyclic, hypogynous. Sepals {ex) five, combined. Petals {pp, ip, ap) five, com- oined to form a two-lipped corolla. In order to under- stand that there are five petals represented in the corolla, it is necessary first to remember that the petals alternate with the sepals. It will then be seen that the three-lobed lower lip represents one anterior petal \ap) and two lateral petals {ip) alternating with two anterior sepals. In like manner the upper lip of the corolla represents two pos- ., ., ^. terior petals (//), one on each side ot the median posterior sepal (see diagram fig. 192). The slight notch in the apex of the upper lip also denotes that the atter represents two closely joined petals. A ring of hairs (/?) lines a zone of the corolla-tube. Stamefis four, the two anterior stamens having longer filaments than the other pair, inserted on the corolla. In order to understand the androecium we must again remember that the stamens should alternate with the petals. There should, therek - , be a median posteriov stamen, but no such stamen i.« x- ent. We therefore cc; elude that the median posterior stamen has been suppressed :. Fig. 191.âVertical section of flower of Dead Nettle. I. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisher, booksubjectbotany
