144 NATIVE BRITISH ORCHIDACE^ 



case, unless the moth stood directly in front of the nectary and inserted its proboscis 

 exactly between the two discs". 



At Trient, on July 26th, 1929, my wife and I saw Papilio machaon visit the flowers 

 of the variety densiflora, and also an orange-brown skipper butterfly, which, when 

 approached, flew away to another spike of the same orchid. Unfortunately we had 

 no net with us. On June 23rd, 1930, 1 took a green ZygJenid moth, Ino statice L. cj, 

 with one pollinium of the type on its proboscis (PI. 27), and a Dipteron, Bmpis 

 livida, with one polUnium on its proboscis, both at Lewes, Sussex. 



GYMNADENIA CONOPSEA x ORCHIS MACULATA 



Orchigymnadenia Heinzeliana G. Camus (1892) 



Pis. 26 A (p. 141) and 28 



Tubers oblong, flattened, thick, with two short lobes at apex. Stem about 20 cm. 

 tall, round, slightly hollow below, glabrous. Leaves 2-4, resembling those of 

 G. compsea, linear, narrow (7 mm.), rather acute, strongly keeled, folded, usually 

 spotted, upper 1-2 bract-like. Spike oval (4-7 cm.), rather lax. Flowers like those 

 of O. maciilata, but smaller, pale rose, with rather long narrow often spotted side- 

 sepals, spreading horizontaUy as in G. compsea, and slender slightly curved spur con- 

 siderably longer than in O. maculata. Lip rather deeply 3-lobed, lobes sub-equal, 

 rounded, slightly crenate, pale rose faintly spotted. 



Two specimens found by me in Hants, and Surrey respectively agreed with the 

 above description. In another specimen found in Surrey at the same station (PI. 28 

 A), the lip was broader than long, its whole area, with the exception of a pale lilac 

 border, dark red-violet. Flowers June to July. 



A specimen found at Winchester, July 3rd, 1928, resembled 0. maculata by the 

 spotted leaves, side-sepals and lip, and short dense spike, and G. compsea by the linear 

 folded leaves, horizontally spreading side-sepals, broad-based petals, small flowers, 

 short broad equally 3-lobed lip, long very slender spur, and oval viscidia. Another 

 from Sevenoaks had a stout spur without honey, with viscidia twice as long as broad, 

 forming roof of spur-entrance, and without pouch. ' 

 Orchis Heinzeliana Reichardt (1876). 



I O.R. p. 274 (1899). 



