. The Canadian field-naturalist. Natural history. 1997 Reddoch and Reddoch: The Orchids in the Ottawa District 57 Cypripedium arietinum R. Brown Ram's-head Lady's-slipper Cypripede tete-de-belier Cypripedium arietinum is the smallest, least conspicuous, least common and hence least familiar of our Lady's- slippers. When in bloom, it is easily identified by its small, purplish flower with its uniquely-shaped lip. In con- trast to our other Lady's-slippers, the lateral sepals are not united. The leaves differ from those of the other species in being relatively small and narrow and in being arran
. The Canadian field-naturalist. Natural history. 1997 Reddoch and Reddoch: The Orchids in the Ottawa District 57 Cypripedium arietinum R. Brown Ram's-head Lady's-slipper Cypripede tete-de-belier Cypripedium arietinum is the smallest, least conspicuous, least common and hence least familiar of our Lady's- slippers. When in bloom, it is easily identified by its small, purplish flower with its uniquely-shaped lip. In con- trast to our other Lady's-slippers, the lateral sepals are not united. The leaves differ from those of the other species in being relatively small and narrow and in being arranged in a rough spiral about the stem. Description Height: 11 (16 - 26) 34 cm [224 plants]. Flower: 1, rarely 2; lip a small conical cup, the opening formed by a circular inrolled edge sur- rounded by numerous white bristles, with several transparent windows in sides, essentially white with pale yellowish green or greyish magenta at the apex and greyish magenta, deep magenta or greyish ruby as stripes centred on a set of vertical veins and irreg- ular cross veins on the front and sides, and as nar- row, vertical, parallel, equally spaced lines on the back; staminode convex above with a marked cen- tral, vertical groove; lateral sepals and petals nar- row, reddish or violet brown, occasionally as stripes on a yellowish green background; in f. albiflorum (see Acyanic Form below): lip white with yellowish green on basal apex, sepals and petals yellowish green; fragrance sweet, floral or vanilla-like, of quite variable intensity. Leaves: 3-4, deep green (but not, as described by some authors, bluish green); 3 - 4 on non-flower- ing plants. Overwintering State: one or more, pale green, conical shoots, appearing at ground level beside the current year's stem in early October. Capsule: brown, ellipsoid, typically x cm, ascending (see Figure la; unfertilized flowers dehis- cent); yields from 30 to 90%, the higher values associated with more open habitats [760 plants]; some capsu
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectnaturalhistory, booky
