(162) 
at the base and near the apex, acute; spur club-shaped or 
almost saccate, nearly straight, about equalling the lip in 
length; ovary 8-9 mm. long in fruit, oblong-ellipsoid. 
Apparently nearest related to L. hyperborea, but smaller 
in every way; the spur is not curved forward as in that 
species, and the petals are very broad and short, scarcely 
more than half as long as the upper sepal; the spur resembles 
that of LZ. strzcta, but that species has much larger flowers, 
comparatively longer linear lip, longer petals and reflexed 
lower sepals. Type collected by R. S. Williams at Bennett 
City, August 25, 1899; also collected by Tarleton above Ft. 
Selkirk. 
Limnorchis leptoceratitis Rydb. sp. nov. 
Roots fascicled, fleshy, fibrous; stem slender, striate, 
glabrous, 2-4 dm. high. Lower leaves oblong, obtuse, half- 
clasping, 4-8 cm. long; upper leaves linear-lanceolate, 
acute; bracts linear-lanceolate, the lower somewhat longer 
than the white flowers, the upper shorter; sepals 3-4 mm. 
long, broadly lanceolate, the upper erect and almost straight, 
the lateral ones reflexed-spreading, 3-nerved, acute; upper 
petals linear, acute, about as long as the sepals; lip lanceo- 
late, obtuse, somewhat rhombic-dilated at the base, equalling 
the sepals; spur very slender, cylindric, curved forward, a 
little exceeding the lip; ovary 8-9 mm. long in fruit, ellip- 
soid. 
Nearest related to ZL. délatata (Habenaria dilatata), from 
which it differs in the longer spur, which is not at all cla- 
vate, the narrower petals, smaller flowers, and shorter, more 
obtuse leaves. Type collected by R. S. Williams at Bennett 
City, Aug. 25, 1899. Also collected by J. Albert Rudkin 
in southern Alaska, 1883, and by J. M. Macoun in Un- 
alaska, July 25, 1891. 
Orchis rotundifolia Pursh. Lake Lebarge (Tarleton). 
Peramium repens (L.) Salisb. Below Selkirk (Williams). 
Corallorhiza Corallorhiza (1..) Karst. Thirty-mile River 
(Williams) ; fruiting specimen only, and determination doubt- 
ful. White Horse Rapids and above Fort Selkirk (‘Tarleton). 
Gyrostachys Romanzofiana (Cham.) MacM. Swamp, 
Dawson (Williams). 
