16 L 
ANOM ACANTHUS : 
a new Genus of Acanthacejl 
By R. D’O. Good, B.A. 
Anomacanthus, genus novum Acanthacearum. 
Bracteolce 2, magnse, foliacese, connatae, primo corollam inclu- 
dentes. Calyx annularis brevissimus integer. Corollce tubus obliquus ; 
limbus patens lobis 5 ovatis rotundatis sestivatione contortis; labii 
antiei lobus anticus quam ceteri minor et basi lamelliferus ; labii 
postici lobi fere connati. Stamina 4, sequilonga, faucibus tubi 
affixa, inclusa; filamenta curvata crassa. Antherce lineares sequi- 
longae, basi glanduloso-pulvinatse, posticse 2-loculares, anticse 1-locu- 
lares. Pollinis grana sphserica plana. Discus annularis valde pro- 
minens. Ovarium sub-globosum, 2-loculare, disco partim abscon- 
ditum ; stylus elongatus inclusus ; stigma inf’undibulare paulo bifidum ; 
ovula magna in loeulo solitaria supra medium septi affixa. Fructus 
magnus pro ordine mirabilis sub-drupaceus in pyrenas duas septicide 
desiliens, exocarpio coriaceo-carnoso, endocarpio lignoso intus furfure 
brunneo copiose insito. Semina solitaria magna exalbuminosa funi- 
culo subevanido ; cotyledones latse maxime corrugatae. 
Frutex scandens glaber. Folia opposita petiolata integerrima. 
Flores pedunculati in axillis pauci vel solitari. 
A. drnpaceus, sp. unica. Frutex scandens; caule quadrangulo 
contorto ; foliis brevipetiolatis ovatis acuminatis basin versus angus- 
tatis basi ipsa leviter cordatis utrinque glabris supra in sicco pallide 
viridibus pilisque minutis glandulosis sparsissime praeditis inferne 
griseo-brunneis nervis utrinque precipue inferne conspicuis prope mar* 
ginem arcuatis nervos secondaries plures ad angulum fere rectum 
emittentibus ; jloribus axillaribus pedunculatis solitariis vel pluribus ; 
bracteolis magnis foliaceisque carinatis acuminatis conspicue nervatis 
postice fere ad apicem connatis antice infra medium connatis; calyce 
annulato minutissimo truncato ; corollce tubo basi expan so superne 
constricto limbo papyraceo patente ; staminibus aequilongis; Jila- 
mentis crassis complanatis glanduloso-pilosis; antheris glanduloso- 
pilosis apice acutis hamatis basi rotundatis glanduloso-pulvinatis; 
stylo long© superne aliquid compresso; stigmate bifido leviter infun- 
dibulari. 
Sab. Portuguese Congo. A soft-stemmed climber reaching a 
height of 15 m. Skirting the woods near the official residence at 
Buco Zan, Gossiveiler, 6815 ! in Herb. Mus. Brit. No. 6815 b ! is 
conspecific and was collected near the village of Caio-Kio, Lufo 
Hombe region, Maiombe. An original note by the collector states 
that the same plant was collected at Pango Mongo in 1916. 
Leaves, including the wing of the petiole, up to 20 cm. long by 
8 cm. broad. Petiole below the wing less than 1 cm. long. Corolla 
white, up to 5 cm. across. Anthers about 1 cm. long, filaments much 
shorter. Style 3-4 cm. long. Ovary, in the young flower, very 
small and almost embedded in the disc. Ripe fruit (as far as can be 
ascertained from the dried pyrenes) at least 10 cm. greatest diameter, 
by about 6 cm. high and 6 cm. broad. 
Journal of Botany.— You. 61. [June, 1923.] m 
