D. Stolz the leaves are widest towards the apex, the 
latter being unequally bilobed with both lobes rounded 
and quite distinct. The long stem and relatively short 
spikes distinguish the Abyssinian species from D. pul- 
chella. It differs from both D. Stolzii and D. pulchella 
in the shape of the lip which is broadest near the base, 
slightly pandurate and quite distinctly, if shortly, lacer- 
ate or fimbriate on the anterior angles. The column, al- 
though much swollen following fertilisation, is clearly of 
the Rhipidoglossum type, being trilobed with a central 
fleshy and porrect middle lobe. 
Diaphananthe subsimplex Swmmerhayes sp. nov. ; 
a D. Stolz Schltr. foliis angustioribus, floribus multo 
minoribus, labello suborbiculari-quadrato apice obscuris- 
sime trilobo; a D. tenuicaleart Summerh. foliis apice nec 
angustatis sed lobulis rotundatis, floribus minoribus, cal- 
cari multo breviore differt. 
Herba epiphytica, glaberrima; caulis elongatus, + de- 
pendens, pauciramosus, 10-35 cm. longus, 2.5-8 mm. 
diametro, superne laxe foliatus inferne vaginis foliorum 
delapsorum fere omnino circumdatus, radices flexuosas 
simplices usque ad 85 cm. longas et 4 mm. diametro 
laeves griseas vel brunnescentes per totam longitudinem 
emittens. Molia erecto- ad recurvato-patentia, 1-2 cm. 
distantia; vagina arcta, valde nervosa, apice truncata, 
7-15 mm. longa, leviter compressa; lamina ligulata (si 
mavis lineari-oblonga), apice inaequaliter bilobulata, lob- 
ulis rotundatis longiore usque ad 8 mm. longo, basi + 
abrupte angustata, 2.5-8.5 cm. longa, 5-12 mm. lata, 
subearnosa. Inflorescentiae axillares, simpliciter racemo- 
sae, patentes, 1.5-4 cm. longae, subdense 5—138-florae; 
bracteae 2-7 mm. distantes, ochreatae, triangulares, sub- 
acutae, 1-2.5 mm. longae. Flores patentes, cremei ad 
ochracei, + viridi-tincti; pedicellus cum ovario 2.5-8 
{ 107 ] 
