. The Canadian field-naturalist. Natural history. 104 The Canadian Field-Naturalist Vol. 111 Malaxis unifolia Michaux Green Adder's-mouth Synonym: Microstylis ophioglossoides (Muhlenberg) Nuttall Malaxis unifolie Malaxis unifolia is a widespread and relatively common, if inconspicuous, orchid found in a wide variety of habitats. It can be recognized by its single, sheathing, cauline leaf and its numerous tiny greenish flowers. In contrast to M. monophylla, the pedicels are notably longer than the height of the flowers. As a result, the flat- topped, dense inflorescence is at least 1 cm in diam
. The Canadian field-naturalist. Natural history. 104 The Canadian Field-Naturalist Vol. 111 Malaxis unifolia Michaux Green Adder's-mouth Synonym: Microstylis ophioglossoides (Muhlenberg) Nuttall Malaxis unifolie Malaxis unifolia is a widespread and relatively common, if inconspicuous, orchid found in a wide variety of habitats. It can be recognized by its single, sheathing, cauline leaf and its numerous tiny greenish flowers. In contrast to M. monophylla, the pedicels are notably longer than the height of the flowers. As a result, the flat- topped, dense inflorescence is at least 1 cm in diameter. The lip has a distinct notch at the apex, often containing a small point. Description Height: 6 (10 - 17) 23 cm [250 plants] (see also Notable Plant below). Flowers: 10 (16 - 49) 80 [58 plants]; greyish green like the rest of the plant or greenish yellow with centre of lip greyish green; fragrance lacking or mild and sweet; flower orientation somewhat irregu- lar, especially for the lower flowers. Leaf: 1, rarely 2, one clasping the other at mid- stem, 1 on non-flowering plants. Overwintering State: as the corm of the current year. Capsules: pale orange, obovoid, typically X cm, horizontal to ascending; yield usually less than 40%, averaging 15% [83 plants]. Seeds: greyish orange, released in mid to late September. Blooming Period: 16 June (2 July - 30 July) 19 August [105 records]. Colony Sizes: 1 - 150, typically to 60, flowering plants; 10 or fewer in 74% of colonies; one excep- tional colony in the Constance Creek valley. West Carleton Township, Ontario, with 1100 plants in 1968 (Hue MacKenzie, records of the Native Orchid Location Survey) [141 colonies]; generally as scat-. 76'' 30 Malaxis unifolia: â = herbarium specimen, # = Native Orchid Location Survey sight record, â² = literature reference. The Canadian Shield is shaded; areas underlain by sand and sand- stone are omitted for Please note that these images are extracted from scanned page im
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