ijo NATIVE BRITISH ORCHIDACE^ 



Halictus calceatus ? (which bore a single pollinium of Orchis tmculatd) and Undenius 

 albilabris V. ^. I also took a small Hymenopteron with ruby-red metallic abdomen, 

 which unfortunately escaped. No pollinia were removed, and the visits may perhaps 

 have been of an experimental nature, but more probably the pollima had been 

 previously removed. 



GYMNADENIA ALBIDA x CONOPSEA 

 X G. Schweinfurthii Hegelmaier 



Tubers divided to base, segments ± 4, short, narrow. Leaves ± 5, ovate-oblong 

 to lanceolate Hke those of G. alhida. Spike ± 4 cm. long, sometimes one-sided, 

 broader than in the latter. Flowers intermediate in size between the parents, pale 

 rose or white tinged with rose. Sepals and petals spreading, not connivent, larger 

 than in G. alhida. Lip wedge-shaped with broadish base, rather deeply trifid at apex 

 with nearly equal lobes, or with longer mid-lobe. Spur rather tliick, longer than m 

 G. alhida. Sometimes nearer to one parent, sometimes to the other, usually resembling 

 G. alhida in foliage, G. compsea in the sepals and petals, and G. alhida m the hp. 

 Austria, Germany, Switzerland (Albula Pass). Flowers July. V.R. 



Two or three specimens found amongst the parents near Arisaig, W. Inverness, 

 in late June were identified at Kew by Rolfe, who said they were substantiaUy 

 identical with the plant of the Alps, and describes them as follows. Leaves mter- 

 mediate, but the spike resembles that of G. alhida. Flowers rose-purple. Spur stout, 

 only twice as long as the lip, which is nearly intermediate in shape.' According to 

 A H WooUey Dod it had the general aspect of G. coNopsea, but with a much shorter 

 and stouter spur. The locality was half a mile from the sea, and not more than 100 ft. 

 above it. 



Sub-tribe II SERAPIADINm Engler, Sjllab. (1892) 

 Viscidia two, rarely one, enclosed in a common pouch left behind when they are 

 withdrawn, or (in Ophrys) each viscidium in a separate pouch. 



Serapiade^ Lindl., Veg. King. p. 182 (1847). Angiadenie^ Parlatore FA ital 

 (1858). BuRSicuLAT^ Rchb. f., Icones (1851). Serapie^ Benth. and Hooker 

 (1883). Angiadenin.^ Camus (1908). Lindley's name is retained amended 

 to end in -inx in accordance with the Vienna rule for sub-tribes. 



A very natural sub-tribe, characterised by the highest development of the rostellum 

 -a pouch filled with liquid to keep the viscid glands from losing their adhesiveness, 

 wliich swings back and exposes them when pushed by an insect, so that they adhere 

 to its head or proboscis. 



I O.K. p. 238 (1898); /.B. p. 352 (1898). 



