102 SOUTH NIGERIAN PLANTS 



4 tubuliformibus distantibus instructo superne flexuoso et 

 florifero ; hracteis ovato-acuminatis scariosis pedicellum brevem 

 cum ovario paullo excedentibus ; scjxiJis triangulari-caudato- 

 acuminatis ; petalis ellipticis apiculatis ; labello e basi hastato- 

 cordata anguste oblongo-triangulari acumiuato margine ciliolato, 

 disco jugis binis superne convergentibus instructo ; columna brevi 

 processubus binis subulatis instructa, (PI. 12, figs. 11, 12.) 



Oban ; n. 952. 



Pseudobulbs -5 em.-' 7 cm. long on the nodes of a slender branching 

 raceme forming a csespitose mass. Leaves 5-8 cm. long, 3-5-4 cm. 

 broad. Scajjes to 13 cm. long, with 3-4 distant tubuliform bracts 

 below and bearing up to about ten flowers on the upper zigzag 

 portion. Floivcring bracts about 2 mm. long. Sepals 3 mm. long ; 

 the lateral 1 • 5 mm. broad at the base ; the dorsal just over 1 mm. 

 Petals 2 mm. long by • 8 mm. broad ; lip 2 ■ 25 mm. long by 1 • 25 mm. 

 broad at the base. Column barely 1 mm. long, bearing a pair of long 

 subulate processes. 



Near B. intertextum Lindl. (Niger Delta) and B. viride Rolfe 

 (Sierra Leone), but distinguished at once by the long narrow linear 

 leaves, and also by minute floral details. 



Polystaehya obanensis Rendle sp. nov. BJiizoma lignosuin 

 flexuosum complanatum ascendens, radicibus numerosis et pseudo- 

 bulbis marcescentibus seriatim approximatis instructum ; i^serida- 

 hulbo compresso 4-angulato binodo, quoque folium singulum 

 anguste oblongum saepissime basin versus angustatum et scapum 

 terminale gerente ; inflorescentia puberula basi bractea mem- 

 branacea apice subacuta arete vaginata superne laxe ramosa, 

 bracteis superioribus e basi ovata longe acuminatis ; Jioribus siccis 

 luteis puberulis ; sepalo dorsale anguste elliptico acute 3-nervio, 

 sepp. lateralibus triangularibus acutis mentum obtuse obconicum 

 eftbrmantibus ; petalis lineari-oblanceolatis acutis ; labello e basi 

 unguiculata trilobato, lobis lateralibus brevibus rotundatis, lobo 

 medio suborbiculari apiculato disco incrassato ; cohnnna brevi 

 crassa. (PI. 13, figs. 1, 2.) 



Oban ; n. 930. 



Pla7it 20-25 cm. high. Eliizome 4-5 mm. broad to 12 cm. long 

 in the specimens collected, internodes 1-5-2 cm. long. Pseudobulbs 

 3 ■ 5-4 cm. long, to 1 ■ 5 cm. broad, enveloped below by the persistent leaf- 

 sheaths, and bearing its leaf a little below the apex. Leaf 8-5-14 cm. 

 long, 1-3-2 cm. broad. Peduncle 4*5-5-5 cm. long; sheathing bract 

 2-3 cm. Panicle 6-11 cm. long, usually with two branches. Fertile 

 bracts 5-6 mm. long. Dorsal sepal 6 -5-7 "5 mm. long, 2-5-2-6 mm. 

 broad; lateral seps. 7-5-8-5 mm. long; chin 4 mm. long. Pcials 

 6-6-5 mm. long, 1-5 mm. broad ; bp 7*5 mm. long, 6 mm. broad, 

 with an upwardly broadening thickening from the base to a little 

 below the middle, and a central thickening on the apical lobe. 

 Column 2 mm. long. 



Apparently near P. cj;iiphijtica De Wild, (from Katanga), but 

 distinguished by its larger flowers and lip-characters. 



