238 ME. H. TT. RIDLEY ON THE 



Huilla. In rivulis lente fluentibus et stagnis limpidis prope 

 LopoUo et Mumpulla. Flores in Octobri et Decembri, etiam 

 Aprili. Folia primum (in vivo) rigidula fragilia pellucida Isete 

 viridia, Wehvitsch no. 6497! Herb. Brit. Mus. 



O. ULViEFOLiA, BucTien. — Madagascar, Imerina, Eildehrandt, 

 3803 ! misenlerg ! Lyall 149 ! Baron 900 ! ParJcer ; '' Tan-Tang- 



hin-ranoo. 



)j 



O. PLANTAaiNEA, Welio. MSS, Caulis brevis crassus descendens, 

 radices multas emittens ; folia copiosa ovata petiolata crispa, 4 

 uncias longa (petiolus 1| unciam), 2| lata ; scapi 10-unciales flac- 

 cidi; spathasaccata, nncialis, alis brevissimis, dentibus circitcr 10, 

 brevibus obtusis ; floris pedicellus e spatlia non productus; sepala 

 lanceolata obtusa | unciam longa quam petala multo breviora, viri- 

 dia, marginibus scariosis ; petala | unciam longa, flava vel lutea. 



Huilla, gregaria in stagnis juxta ripas rivorum prope Catumba. 

 Eadicis fibri sub epiderrue seneo-nitentes. No. 6469, Wehvitsch ! 

 Herb. Brit. Mus. 



This plant has a distinct, though short, conical descending 

 stem, by which, together with its ovate crisped leaves and nu- 

 merous teeth to the spathe, it is easily distinguished. 



O. LA:N'CiroLiA, Bichard, Tentamen Flor. Abyss, ii.p. 280, t. 95. 

 Ambaca in lacu ad sinistram fluvii Caringa. Flores et fructus 

 Junio. No. 6466, Welwitschl Herb. Brit. Mus. 



Var. FLTJiTAKs, n. var. Folia elongata angustiora longissime 

 attenuata In petiolis, pedalia 1| unciam lata. 



Pungo Andongo. Frequens cum Nymphcsis in stagnis editio- 

 rum rupium Prgesidii Pedrasongue ad jugum inferius. Flores 

 medio Februario, fructus Aprili. No. 6468, Wehvitsch ! Herb. 

 Brit. Mus. 



I have little doubt as to this being the plant intended by 

 Kichard; and if so, it is a true Ottelia and not a Boottia at all, as 

 suggested in the ' Genera Plantarum.' It exactly resembles the 

 figure quoted, but I have not seen Abyssinian specimens. The 

 plants referred by Mr. Baker (Trans. Linn, Soc. xxix. p. 151) to 

 this species, Avhich were collected by Speke and Grant andSchwein- 

 furth, seem to me to be a species of Boottia allied to B. ahjssinica, 

 mihi. The flowers in Dr. Welwitscli's specimens were deep yellow. 

 I suspect that the white-flowered plants obtained by Schweinfurth 

 at Monbuttu, no. 3938, and one of those collected by Speke and 

 Grant, are new species of this genus. 



