80 MR. S. LE MARCHANT MOORE OlST THE OCCURRENCE 



1210. SphjEROstilbe gracilipes, TuL (No. 270 

 On dead wood. 



1211. Nectria gyrosa, B. SfBr. Peritheciis in stroma aurantiacum 

 immersis, oblongis, sursum incrassatis; ostiolo nigro, quandoque 

 elongato ; ascis clavatis ; sporidiis biserialibus, ellipticis. unisep- 

 tatis. 



Spores -0003---0004 long, -00015--0002 wide. 

 Confounded in the memoir with Diatrype gyrosa. 



*Dothidea rhytismoides, Cd. (No. 1141.) 



Occurrence of Staminal Pistillody in an Acanthad. 

 By S. Le Marchant Moore, Esq., F.L.S. 



[Eead June 17, 1875.] 

 (Plates III. ft IV.) 



TnE subject of the present notice is the WTiitfieldia lateritia, Hook., 

 an example of which has lately been flowering in the Palm-house 

 at Kew. 



The normal floral arrangement in this plant is as follows : — The 

 bud is protected by a couple of broadly ovate bracts ; these are 

 succeeded by a 5-cleft calyx with oblanceolate segments, inside 

 which is placed the corolla with a tube considerably longer than 

 the calyx, and a half-spreading five-lobed limb exhibiting but slight 

 differentiation into upper and lower lip. Upon the corolla-tube, 

 and at a distance from its base of about a quarter of its length, are 

 seated four stamens in two pairs, one of which has its origin a 

 little higher than the other ; each filament bears an anther, con- 

 sisting of two equal cells with sagittate bases and shallow pollen- 



cavities ; the fifth stamen is entirely wanting ; and the whole an- 

 droecium is girt at its base by a fringe of fine hairs. The ovary is 

 very much compressed laterally ; it has at its base a deep fleshy 

 annular disk ; and its two cells contain each a couple of retinaculum- 

 supported campylotropous ovules. These various points of struc- 

 ture are sufficiently illustrated by the figures 1-6. 



The most simple deviation met with is not one exhibiting pi s ~ 

 tillody. In this case the normally absent fifth stamen is repre- 

 sented by a short staminodic filament alternating with the lobes 

 of the upper lip ; it is of an arched form, and about a line in length. 







