258 THE JOURNAL OF BOTANY 



reliqua paullo altiiis affixum ; authenie 'vix 0*1 cm. long, btylus 

 crassiusculus, glaber, 0*35 cm. long. Nuculte rubescentes, 0*2 cm. 

 long., vix totidem diam. 



The variation in the size of the calyx from flower to flower is a 

 point worth mention. 



I am of opinion that Lohostemon somalenm Franchet (Revoil, 

 Faiine et Flore ties Pays Cumalis, Sertiim Sovialense, p. 44) must be 

 referred to this genus. In assigning to Lohostemon the plant 

 studied by him, the excellent French botanist just named was 

 doubtless swayed by the flat insertion of the nutlets upon a flat 

 gynobase. Thanks to the courtesy of M. Jules Poisson of the 

 Paris Museum, I have been able to examine a few fragments of 

 Revoil's specime]], which, though they prove erroneous what I had 

 supposed might be the case — namely, that the plant above described 

 was identical with Lohostemon somalensis Franchet — yet are suflicient, 

 taken together with M. Franchet's description, to convince me that 

 the latter is not a Lohostemon. The only point about which infor- 

 mation is not forthcoming relates to the stigma of the supposed 

 Lohostetuon ; but even if that organ have not the structure we find 

 in Leurodine lithospermoides, the character of the new genus might 

 be modified in accordance without doing violence to the general 

 principles underlying the classification of the order. The difter- 

 ences between the two species may then be summed up thus : — 

 Planta verrucata. Folia lauceolato-ovata, 



nee ultra 1-0 cm. long. Calyx fere omnino 



glaber, 0-5 cm. long. Nuculte acutai . L. somalefisis. 

 Planta hispida. Folia lineari-oblonga, usque 



ad 2*0 cm. long. Calyx hispidus, saltem 



0-75 cm. long. Nuculci3 obtuste . . . L. lithospermoides. 

 Dr. Giirke (Engler & Prantl, Lflainen/amilien, iv. 3a, s. 128) 

 appears to have overlooked the alleged extension of Lohostemon into 

 the northern hemisphere. 



Omania, 

 Scrophulariaceariun e tribu Eaphrasieanun genus novum (tab. 424 B). 



Calyx tubulosus, 5-angulatus, aliquantulo bilabiatus, labio 

 superiore trilobo inferiore bilobo. Corolhie tubus sursum breviter 

 amplificatus ; limbus bilabiatus, labio postico erecto concavo emar- 

 ginato marginibus revolutis, labio antico majori trifido bigibboso 

 sestivatione externo. Stamina 4, didynama ; antherae leviter ex- 

 sertse, inter se iequales ; loculi discreti, stipitati, obtusi, omnes 

 polliniferi. Stylus filiformis ; stigma capitatum, obscure bilobum. 



Ovula in loculis indefinita. Capsula . Sufl'rutex ramosus 



facie Lindenhergim. Folia parva, opposita, Integra. Flores breviter 

 pedunculati, ex axillis foliorum superiorum orti. Bracteolae 0. 



Omania arabica, sp. unica. Ramis ascendentibus teretibus 

 una cum foliis calycibusque arete et minute pubescentibus, foliis 

 ovatis obtusis modice 0*5 cm. long, et 0-35-0-4 cm. lat. (summis 

 vero minoribus) petiolis circa 0*2 cm. long, fultis, pedunculis 

 petioles aequantibus, calyce in toto 0*6 cm. long., hujus lobis anticis 

 lanceolatis 0*3 cm. long., posticis paullo latioribus 0-2-0'25 cm. 



