OPHRYDEyE—SERAPIADIN^— ORCHIS 215 



(2) Stem 38 cm., very hollow. Leaves as in O. maculata, linear-lanceolate, tapering, 

 acute, grey-green, plentifully spotted. Bracts (lower) much exceeding flowers, 

 nearly 4 cm. long. Spike dense, 9 cm. long. Flowers larger than in O. maculata, mauve, 

 exactly the colour of the prevailing shade of O.pratermissa in that locality. Lip clearly 

 3-lobed, side-lobes broad, rounded, somewhat rhomboidal, slightly crenate, mid-lobe 

 not quite half as broad as side-lobes and slightly longer, tongue-shaped. Spur conico- 

 cyHndrical, almost equal to ovary, like that of 0. praitermissa but more slender. Lip- 

 markings a double loop on each side with a few scattered spots, red-violet. Facies 

 of O. maculata, for which it was taken till it was noticed how very hollow the stem 

 was. Basiling! Surrey, June 26th, 1917. Enlarged flower, PI. 49 A, fig. 3. 



(3) Stem 22 cm., solid at base except for a pinhole, hollow above. Leaves dark 

 greyish green, oblong, 14-20 mm. wide, scarcely narrowing towards the base, 

 gradually tapering towards the tip, with many small circular spots. Spike conical, 

 becoming cylindrical. Flowers larger than in maculata, of the delicate pale mauve 

 often seen in pratermissa. Bracts lanceolate, acuminate, green tinged purple. Sepals 

 lanceolate, reflexed, spotted. Lip broader than long, paler in the middle, side-lobes 

 rounded, mid-lobe half their breadth, slightly longer, tongue-shaped, obtuse, markings 

 two loops made up of dotted lines. Spur rather long, nearly equal to ovary, cylindrical, 

 widening at the tliroat, stouter than in 0. maculata. Facies of O. maculata, but the 

 large pale lilac flowers with their broad nearly flat shallowly 3-lobed lip and dotted 

 pattern at once suggest the parentage oi pratermissa, to which the plant is nearer 

 than any other hybrid I have seen. Found near Winchester. The spike was given 

 to me by the Rev. S. A. McDowell, of Winchester College, June 22nd, 1917 (PI. 49 A). 



(4) Tliis hybrid occurs in considerable numbers in a station near Belfast where 

 both the parents are plentiful, but 0. incarnata is absent. Ail the hybrids have spotted 

 leaves, but none have ringed spots. 



(5) The beautiful marsh orchid (0, latifolia) with (often) ring-spotted leaves frequent 

 near Winchester is considered by Dr Druce to be O. maculata x 0. pratermissa. This 

 is discussed under O. latifolia. The preceding paragraph shows that in a station where 

 the latter hybrid occurs in some abundance, no ring-spotted plants have been found. 



For 0. maculata superha Syme {E,ng. Bot. ix, loi), vide Orchis latifolia. 



ORCHIS MACULATA x PURPURELLA 

 PI. 52 B, xOrchis venusta Steph. p. and f.^ 



Although O. maculata grows in some numbers in a wood near . purpurella at Aberyst- 

 wyth, no hybrid between them was found by Dr Stephenson during his two or tliree 

 years' stay there, although hybrids with elodes occurred. A fine example of 0. macu- 



' /--B. p. 34 (1922)- 



