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Ovary 2–3-celled, with several pendulous orthotropous ovules in each cell; stigma minute.

Having the ovule inverted at an early period in its development, so that the chalaza is as the apparent apex; Ð opposed to orthotropous.

The female flower is enveloped in a closely fitting sac-like investment, which must be regarded as a perianth; within this is an orthotropous ovule surrounded by a single integument prolonged upwards as a beak-like micropyle.

Section of seed of Rock Rose, Helianthemum Canadense; orthotropous, with curved embryo in the albumen. 430a.

Nutlets coriaceous, small, tawny-hairy below, containing a single orthotropous pendulous seed.