48 THE PLANTS OF MILANJI, NYASA-LAND, 
the smaller ones are less than 1 in. (11 lines). In the larger the lateral sepals are ¿ in. 
long by 3 in. broad, the hooded dorsal one ¿ in. high by nearly 4 in. from front to back ; 
the spur is 2 lines long by 1% in diameter. The hooked petals are nearly 4 in. long, 
laterally attached by the broader base to the side of the column, widening again near the 
broadly emarginate apex. Lip ¿ in. long, tapering upwards, the sides, except near the 
base, deeply fimbriate as well as the apex. 
Hab. Milanji, 6000 ft., Oct. 1891 (4. Whyte, nos. 36, 136, & 199); Nyasa-land, 
1891 (Buchanan, no. 1016); Higher Plateau, North of L. Nyasa, Oct. 1880 (Thomson) ; 
Zomba, Zambesia, 6000-7000 ft., Sept. 1859 (Kirk); between L. Tanganyika and 
Nyasa, April 1890 (H. H. Johnston). All in Herb. Kew. 
Belongs to the section Herschelia, and is near Disa lacera, Sw., var. multifida, N. E. 
Brown, figured in the Bot. Mag. 7066, but is distinguished by the blunt sepals, the 
characteristic shape of the petals, and the blunter spur in a straight line with the base 
of the hooded sepal. The lip, moreover, is much more deeply fimbriated. 
ARISTEA JOHNSTONIANA, Rendle, sp. n. Herba foliis radicalibus subpedalibus, rigidis, 
linearibus, superne attenuatis, acutis; pedunculis pedalibus, complanatis, aphyllis, 
vix alatis ; bractea vaginante acuminata, nune inflorescentiam paucifloram superante, 
nunc breviore; spathee valva exteriore triangulari acuta, interiore brunnea, membra- 
nacea, haud lacerata; perianthii segmentis obovatis, patentibus. 
The leaves, which are condensed into a radical rosette, are nearly a foot long and 
1-2 lines broad. The very narrowly winged leafless peduncle ends in a small, usually 
3-flowered stalked head above a green sheathing acuminate bract, which sometimes 
overtops the head, sometimes falls short of its stalk; there is usually a smaller lateral 
cluster sessile in the axil of the bract and included by it. The outer spathe-valve is 
green, with a broad, brown, membranous margin, and 5-6 lines long; the inner brown, 
membranous. The perianth-segments of the outer whorl are 4 lines long by 14 broad, 
with a dark-coloured midrib projecting as an apiculate apex; those of the inner whorl 
are broader (2 lines), with a rounded apex. Capsule not seen. 
Hab. Milanji, 6000 ft., Oct. Nos. 14 & 81. 
Near A. alata, Baker, from the mountains of the Masai country, but easily distin- 
guished by its very narrowly winged leafless peduncle ; it is also allied to 4. abyssinica, 
Pax, but the latter has the broadly winged peduncle of 4. alata and less rigid leaves, 
while the inflorescence is either a single head, or, if a second small axillary cluster is 
_ present, the whole is overtopped by a large bract *. 
— * ARisTEA TaYLorIANa, Rendle, sp. n. Herba foliis 3-6-pollicaribus, radicalibus, rigidis, linearibus, superne attenu- 
atis, acutis vel subpungentibus ; pedunculis 4-8-pollicaribus, complanatis, aphyllis, anguste alatis; inflorescentia 
A. Johnstoniane, sed bractea semper breviore ; perianthii segmentis suberectis, fere spathulatis; capsula oblonga 
. A rotundata, breviter pedicellata. 
The leaves closely resemble those of A. Johnstoniana, but are shorter, being 3-6 in. long and 14 to nearly 2 lines 
broad ; they are generally shorter than the leafless peduncle, which is 4-8 in. long, about 1 line broad, and narrowly 
. winged. The inflorescence resembles that of A. Johnstoniana, but the bract always falls short of it; the triangular- 
acute outer spathes are 5 lines long. The suberect perianth-segments are a vivid blue in colour, almost spathulate 
