MR. SCOTT Elliot's tropical African orchids. 251 



ramose, radicibus efc vaginis verrucosis ; racemis axillaribus bifloris 

 folia ligulata superantibus, bracteis late ovatis ; floribus dclicatulis, 

 sepalis e basi lanceolata longe candatis, petalis subhastatis in 

 caudas filifovmes productis, labcllo orbiculariovato apice crassi- 

 nsculo abrupte acuto, basi in calcar longum rectum continuato ; 

 columna brevi crassa superue bialata. 



Hab. Mt. Milanji, Nyasa-land, A. Whyte, 1892. 



About f ft. high, with ascending sliglitly zigzagged branches. 

 Leaves distichous, with slightly bifid unequal tips ; 2-2^ in. long 

 by 2^-2^ lines broad. The very slender rachis of the raceme 

 perforates the leaf-sheath, and bears 2 sheathing bracts at the base, 

 and in its upper third 2 blunt chestnut-brown bracts 2-2^ lines 

 long, each subtending a slender-stalked flower. The spreading 

 sepals are 13| lines long by If broad in the 7-nerved lower portion. 

 The petals are 11 lines by 1^ at the 5-nerved base. The lip 

 measures 6 by 4 lines, and is marked with numerous thin dark 

 parallel apically converging veins. It is directly continuous with 

 the spur, which is 2 in. long. The column is 1 line long, and 

 bears in its upper portion 2 wing-like projections which form a 

 hood over the stigma. The somewhat flattened anther has 2 

 posterior pockets. No pollinia were present. 



Evidently closely allied to the Mauritian A. expansum Thouars 

 [Orcli. Afr. t. 57), but a larger plant ; the flowers of the former are 

 moreover solitary, and the sepals and petals less tailed. 



Listrostachys clavata, sp. nov. Caule elongato radices et 

 folia ligulata vel e basi cuneata oblonga gerente ; racemis brevibus 

 axillaribus bifloris, bracteis parvis truncatis; floribus inter minores, 

 sepalo dorsali ovato-lanceolato, subacuto, lateralibus petalisque 

 lanceolatis, labello ascendente e basi valde concava carina mediana 

 instructa, late acuminato ; calcare sublongo supra medium subito 

 clavato ; columna brevissima crassa rotundata ; pollinarii stipitibus 

 ovalibus, glandula bifida. 



Hab. Bafodeya Limba, Sierra Leone, April, 1891, No. 5555. 



The stem is about 1 line thick ; the leaf-sheaths are about half 

 as long as the iuternodes (f in.); the blades have a very unequal 

 apex, and are about 3 in. long by G-10 lines broad. The racemes 

 perforate the leaf-sheaths, and are about 1 in. long ; the broad 

 truncate floral bracts 1 line. The stalk, with ovary, is 4|-5 lines 

 long. The sepals and petals are subacute, the former 7-nerved, 

 the latter 5-nerved. The dorsal sepal is 4 lines long by 1|- lines 

 broad, the lateral 3f by If lines, the petals 3^ by 1^. The lower 

 half of the lip is deeply concave, with a low median keel running 

 up into the base of the upper acutely triangular half; the whole is 

 3 lines long, with a spur 5i lines. Tlie thick column is scarcely 

 1 line long, and 1^ hues broad; the sides are very thick and fleshy. 

 The shortly pyriform pollinia are attached by oval stalks to a rather 

 large gland, which is bifid above, and easily separable into 2 parts 

 below the incision. The anther is mediauly sulcate, and posteriorly 

 2-chambered. 



A distinct species, especially characterized by its abruptly club- 

 shaped spur. 



