. Les cours avec les plantes. Suggestions pour voir et d'interpréter certaines des formes communes de végétation. double stigmatisation. Le plan de cette fleur est inthrees, et l'ensemble de la composition est très différent de tout-chose que nous avons vu. 243a. Le aristoloehias sont soit des vignes ou des plantes à la verticale, andthey donner le nom (Aristoloehiaoese) à une petite tribu connue queles sarrasine, la famille à laquelle le gingembre sauvage ou asarum appartient.Plusieurs curieux et voyante aristoloehias tropicales sont cultivées dans fineconservatories. 244. Le crape myrtle (Fig. 206) est un des plus commun des arbustes cultivés ou petite treesfrom si Washington

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. Lessons with plants. Suggestions for seeing and interpreting some of the common forms of vegetation. bed stigma. The plan of this flower is inthrees, and the entire make-up is very unlike any-thing which we have seen. 243a. The aristoloehias are either vines or upright plants, andthey give the name (Aristoloehiaoese) to a small tribe known asthe birthwort family, to which the wild ginger or asarum belongs.Several odd and showy tropical aristoloehias are grown in fineconservatories. 244. The crape myrtle (Fig. 206) is one of themost common of cultivated bushes or small treesfrom Washington south. It is native of the EastIndies, but is planted for the profusion of itsrose-red or flesh-color, and rarely white, crispyflowers. The first thing to observe about, thisflower, as of any other flower, is the position ofthe ovary. This is superior. Its kinship is pre- PARTICULAR TVPES OF FLOWERS, CONTINUED 213 sumably, therefore (though not necessarily), nearerthe peas and violets than the birthworts {24:7a). 245. The calyx is 6-lobed. Upon the calyxare borne the petals and the numerous stamens, . Fig. 20C.Flower of crape myrtle, of which the six outermost are long and promi-nent. The style is single and slender, but theovary is 3- to 6-loculed. The striking feature ofthis flower is the wide-spreading crimped petals, which are borne upon distinct stalks or claws;but the essential features of it are the charactersassociated with the relative numbers and positionsof the parts. 214 LUSSONS WITS PLANTS 246. We have now seen flowers in which theparts are arranged in threes, fours, fives and sixes.This numerical order is very important in deter-mining the kinships of plants. It is most apparentin the floral envelopes and in the androecium, butit is very apt to appear in the pistil in the numberof locules or placentae, or in the styles or stigmas. 246o. To indicate the numerical plan, the number is prefixedto the Greek word merous, denoting member : as 2-merous, 3-merous, 4-merous, 5-m

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