358 NOMENCLATURE OF BRITISH PYRENOMYCETES. 



The plant, which has been broken off below the pair of leaves, 

 is 20 cm. high. The leaves, which are papery when dry, have a 

 rather long sheathing base (3 cm.), passing somewhat abruptly into 

 the blade (8 X 4-5 cm.). The scape is 15 cm. long, the raceme 

 occupying its upper half. The delicate 1-nerved bracts are 7-8 mm. 

 long ; the pedicel with the decurved ovary reaches in the lowest 

 flowers 1*5 cm. The dorsal sepal is G X 2*5 mm., the laterals 

 6 X 3*5 mm., the petals 6-5 x 1'75 mm. The large flattened lip 

 measures 1 cm. each way. The column including the small heart- 

 shaped anther is 2 mm. long, and is produced on each side of it 

 into a short bluntly-rounded incurved arm. 



Approaches M. purpurea Lindl., from Ceylon and Java, but is at 

 once distinguished by its large round lip. The flowers are also 

 larger. 



Zeuxine Whiteheadi, sp. nov. Herba foliis glabris ovatis 

 subradicalibus ; scapo pubescente elongato ; spica bvevi pauciflora ; 

 bracteis lanceolatis ovarium paullo excedentibus ; floribus pro genere 

 magnis ; sepalis petalisque uninerviis subsqualibus, sep. dorsali 

 oblongo-lanceolato, lateralibus oblongo-ligulatis, petalis oblongis 

 basi angustatis, labelli ungue cum basi saccata, glandula bina 

 carnosa rotundata includente, et marginibus membranaceis inflexis, 

 alls orbicularibus crispulatis ; columua brevi, processubus anteriori- 

 bus parallelis latis apice angustatis, anthera ovato-lanceolata. 



Hab. Mindoro Is., Mt. Dulangau. 



A slender plant 24 cm. high, leaves 2 cm. long by a little more 

 than half as broad; the slender sterile bracts 10-13 mm. long; 

 amplexicaul below, narrow and pointed above ; fertile bracts free, 

 lanceolate, with ciliolate margin, 8-5 mm. long, decreasing up- 

 wards, spike scarcely 2-5 cm. long; dorsal sepal 5*5 x 2 mm., 

 lateral sepals 6 X 2-5 mm., petals 5-5 x 2-5 mm., lip 5 mm. long; 

 claw darker in colour, with delicate infolded upper edges, 2-5 mm. 

 broad ; limb abutting directly upon the claw (4-5 mm, broad) of two 

 roundish wings with crisped undulating margin. 



A distinct species, perhaps nearest to Zeuxine affinis Benth., 

 differing in its short spike, larger flowers, and especially in its lip- 

 characters. 



NOMENCLATURE OF BRITISH PYRENOMYCETES. 

 By Annie Lorrain Smith. 



The large and important group of the Pyrenomycetes has 

 recently been added to the exhibition of British Fungi in the 

 Natural History Museum. Drawings illustrating the genera have 

 been placed on the cards, and, as far as possible, the plants are 

 exhibited with descriptions of each species. 



There has been hitherto no complete compilation of the orders 

 for Great Britain, and the records of species have been drawn from 

 various published lists. The arrangement mainly followed has 

 been that adopted by Winter in Rabenhorst's Cryptof/ainic Flora. 



