Field notebooks : Switzerland, 1931-1938
Page 56
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Transcription
[7-3-34 Miss Mac Ewan found N. nigra at Rockers de Naye, slopes, west ridge, at least several specimens] 6-24-34 Nigritella nigra Reich-Cote III 405- SVKI/66 = N. augustiflora Reib. Box 512, FL. Brought by V.M. Porter from Dent de Midi. Studied carefully for comparison with N. rubra Richters 8504 I. Enlarged 2x. Lip is 6 1/2 mm long, 2mm wide at base. At 3 mm from tip the edges slide sharply upwards to form a sort of tubular effect but in fully opened flowers the edges just don't touch. The line dc is about 2.8 mm. When lip is opened flat (hard to do) it is 4mm wide at widest point which is about 1 1/2 mm above the base. In FL from which above meas. were taken the 2 lateral outside perianth parts are 2mm wide; the other parts (except lip) are 1 1/2 mm- wide (all meas. at widest part). In the lateral outside parts this widest part is below the middle; the other parts are more uniform in widths. Flowers very dark maroon (no bluish tinge which would justify "purple"); lower bracts are green (with neat red lined edge) to towards the tips where supposed darker red upper bracts green at base for shorter distance. The red part of bracts is exactly the same shade as the lip.