148 PROFESSOE OLITEH OK APEICAK LEKTIBrLAIHE-aE, 



Calyx lobis membranaceis subaequalibus rotundatis. Corolla parvula 

 labio superiore calycem paulo superante. Flores circiter 2 lin. lotigi, 

 "pallide flavescentes sive straminei" {WelwitscTi), 

 Welvvitsch, Iter Angolense, no. 272, Distr. Huilla, "nunc natans nunc 



fere terrestris in stagnis in editioribus sylvaticis de Morro de 



LopoUa." 



This is one of the most remarkable species of the genus that I 

 have seen. The divisions of the submerged leafy axis are almost 

 of microscopic tenuity. The curious form of the flower, owing to 

 the connation of the margins of the very short, but broad retuse 

 upper lip with the scoop-shaped lower lip, the cavity of which is 

 not produced anteriorly in the form of a spur as in most TTtricu- 

 larias^ but, ou the other hand, thins out in this direction, being 

 deepest towards the base of the corolla, distinguishes the plant 

 at once from all other floating species with which I am acq^uainted. 

 Unfortunately I have not seen mature capsules. 



C. Bracteolte laterales geminates minutissim(B adsunt. Corolla labio 



inferiore bifido. 



?• U, RIGIDA, Bmj. 



A very remarkable species growing in Senegambia and Sierra 

 Leone, described by Benjamin in the ' Linnsea ' (vol, xx. p. 303) 

 from fruiting specimens with imperfect flowers. Having recently 

 seen good specimens in flower in the Dublin and Paris herbaria, 

 I add a description of the corolla and calyx-lobes. Some of the 

 firm and rigid many-flowered scapes are attached to a widely- 

 spreading, much divided, leafy axis with capillary segments, nearly 

 or quite destitute of " bladders ;'' other scapes are free, "but may 

 have been torn off when collected. Whether this leafv axis be sub- 



cannot 



curious 



sometimes the other. In habit the plant resembles the 

 Abyssinian genus Quartinia^ Rich. 



L 



F 



. Calyx lobis inaequalibus, superiore majorelate orbiculato, inferiore ovato- 

 rotundato obtuso. Corolla labio superiore calyce duplo longiore ovate*' 

 rotundato obtuso integro, labio inferiore bilobo, lobis obtusis, basi 

 ecalcarato leviter saccato. 



§ 2. Scaprts hast foliis linearihcs, sj)atTiulatis v, ohovatO'Spatliulati^ 

 integri8^ ante Jlorescentiam sc^e evanescentibus. Semina tiC- 

 appendieulata. 



A. Bractea medio aJUxa; hracteolm 0. Flores lutei. 



8. tJ. SUBULATA, L, 



Welwitsch, Iter Angolense, No. 257- Distr, Huilla> " in pascuis editis 



