. The Canadian field-naturalist. Natural history. 1997 Reddoch and Reddoch: The Orchids in the Ottawa District 31 Arethusa bulbosa Linnaeus Arethusa Arethuse bulbeuse Arethusa bulbosa, regarded by many as one of our most beautiful orchids, is one of the three pink to purple fen orchids in the District. It is the least abundant of the three. It can be distinguished from the other two, Pogonia ophioglossoides and Calopogon tuberosus, by its essentially erect lateral sepals. It differs from the former by its very small floral bracts and lack of an elliptical cauline leaf, and from the latter by i
. The Canadian field-naturalist. Natural history. 1997 Reddoch and Reddoch: The Orchids in the Ottawa District 31 Arethusa bulbosa Linnaeus Arethusa Arethuse bulbeuse Arethusa bulbosa, regarded by many as one of our most beautiful orchids, is one of the three pink to purple fen orchids in the District. It is the least abundant of the three. It can be distinguished from the other two, Pogonia ophioglossoides and Calopogon tuberosus, by its essentially erect lateral sepals. It differs from the former by its very small floral bracts and lack of an elliptical cauline leaf, and from the latter by its solitary flower. Description Height: 8 (13 - 24) 38 cm [172 plants]. Flowers: 1, rarely 2; usually purple, sometimes purplish red, deep magenta, greyish magenta or light lilac, occasionally purplish pink, purplish white or lighter; lip white with distal border (and sometimes sides) of same colour as sepals or lighter and with stripes of more intense colour, with 3 rows of bristles along centre line pale yellow or lighter; fragrance moderate, sweet, floral, like violets or lilacs. Leaf: 1, developing to maturity after anthesis, 1 on non-flowering plants. Overwintering State: as the corm of the current year. Capsules: greyish brown, ellipsoid to obovoid, typically x cm, ascending to vertical; yield very low, perhaps a few percent (Boland and Scott (1991) report 16% in Newfoundland, Thien and Marcks (1972) report 5% in Wisconsin). Seeds: light brown, released by late September. Blooming Period: 28 May (10 June - 26 June) 3 July [42 records]. Colony Sizes: 1 - 300 flowering plants [10 records], as scattered individuals; the number of plants counted on a single visit is about a quarter of the plants flowering in a month because individual flowers last only about a week (Ed Greenwood, per- sonal communication 1987, quoted in J. M. Reddoch and A. H. Reddoch (1987d)). Current Status: rare in the Province of Quebec (Bouchard et al. 1983).. 76° 30' Arethusa bulbosa: â = he
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectnaturalhistory, booky
