MI3CELLAXEA AFRICAXA 217 



iobi 1-5-2 mm. CoroUie tubus 7 mm., lobi 2 mm. long. Anthers 

 circa 1 mm., ovarium 2 mm., stylus 7 mm. long. 



The slender habit, entire leaves, together with the mucronate 

 anthers, afford the best means of distinguishing this species. 



Buchnera quadrangalaris, sp. nov. Caule sat valide erecte 

 ramoso quadrangular! scabriusculo deinde Isevi ; foliis (summis 

 alternis suboppositisve) sessilibus oblongo-oblanceolatis obtusis vel 

 obtusissimis optime 3-5-nervibus utrinque scabridis ; spicis sessilibus 

 terminalibus simplicibus vel basi 2-3-ramosis quadritariatim densi- 

 floris ; bracteis ovatis acutis dorso margineque hispidulis ; hracteolls 

 lineari-oblanceolatis obtuse acutis bracteis iequilongis; calyce bracteolas 

 superante latiuscule quadrangular! 4-nervi hispidulo lobis 4 quam 

 tubus plane brevioribus oblongis obtusiusculis ; corollce tubo calycem 

 breviter excedente subcylindrico paullulum curvato glabro lobis 

 obovatis obtusissimis tubo brevioribus, ^/«;«e;jz'is imberbibus antheris 

 acutis. 



Angola, in Mandioca plantations toward U'Golo ; Gossweil€}\ 

 1056. 



Planta |-metralis. Folia plerumque 3*5-5 x 1-2 cm. Spicae 2-3 X 



1 cm. Flo res sec. cl. deteetorem albi. Calyx totus 5 mm. long, 

 (sub fructu usque 8 mm.), 2 mm. lat. ; lobi longit. vix 2 mm. ad- 

 aequantes. Corollte tubus 6 mm. long., circa 1 mm. lat. ; lobi 

 1*75 X 1 '25 mm. Filamenta longiora circa -75 mm. long. Ovarium 

 ovoideum, 1 mm. long. ; stylus clavellatus, 1'5 mm. long. Capsula 

 late ovoidea, 3 x 2'75 mm. 



Can be told at a glance from B, lij^pioides Vatke by the entirely 

 different flowers. 



Buchnera convallicola, sp. nov. Caule erecto robusto circiter 

 4-spithameo pauciramoso ; ramulis sat tenuibus uti caulis seabrius- 

 culis ; foliis inferioribus oppositis ceteris siepissime alternis nisi sub- 

 oppositis sessilibus oblongis obtusis nonnunquam obtusissimis superi- 

 oribus gradatim imminutis omnibus pagina utravis scabridis in sicco 

 haud nigrescentibuSj^or/^Msin glomerulis terminalibus brevijDeduncu- 

 latis subglobosis vel ovoideis dense multilloris disjDositis ; bracteis 

 inferioribus quam glomerulus brevioribus omnibus lanceolatis breviter 

 acuminatis calyci circiter aequilongis uti bracteolae calyxque scabrius- 

 cule pubescentibus ; bracteolis lineari-lanceolatis acuminatis quam 

 bractea paullulum brevioribus ; calyce 10-nervi lobis 5 lanceolatis 

 acuminatis ; corollce tubo recto sub limbo leviter dilatato lobis inter 

 se fere sequalibus suborbicularibus ; ovario oblongo-ovoideo quam 

 stylus apice clavatus integerque breviore ; capsula ovoidea, obtu- 

 sissima. 



Belgian Congo, in valley at Mt. Senga ; Kassner, 2984. 



Folia (uti, bracteae, bracteolae, calycesque) in sicco brunneo-vel 

 griseo-viridia, plerujnque ib 3 cm. long., 5-7 mm. lat., niro 5x1 cm. 

 attingentia, summa in bracteas transeuntes. Glomeruli 1-2x1*5 cm. 

 Bractea3 8*5 mm. long., bracteola? 7 mm. Calyx in toto 8 mm. long., 

 inferne 1*5 mm. superne 2 mm. lat. ; hujus dentes 2 mm. long. 

 CoroUtK tubus 9 mm. long., inferne vix 1 mm. lat. ipso sub limljo 



2 mm.; lobi 3x4 mm. Filamenta 1*5 mm. long., antherie totidem. 



Journal of Botam'. — Vol. 57. [August, 1919.] b 



