Oreacanthus.] xcviii. acanthace.-e (claiike). 177 



1. O. Manniiy Benth. in Iknth. et Hook. f. Gen. PI. ii. 1104. 

 Leaves up to Ih by 3 in., acuminate at either end, very slightly hairy, 

 especially on the nerves beneath, margin obscurely crenulate ; cystoliths 

 subconspicuous on both surfaces; petiole 0-1 in. long. Panicle up to 

 11|- by 7 in., with l()()-200 flowers; bracts hardly J in. long, linear. 



Calyx J in. long. Corolla mauve or whitish. Capsule § in. long. 



Lindau in Engl. &l Prantl, Pflanzenfam. iv. ?> B. 345. 



Upper Guinea. Cameroons : Cameroon Mountain, 7000 ft., Mann, 1259 ! 

 1971 ! 8000 tt., Johnston, 64 ! 65 ! Kalbreyer, 132 ! Preuss, 1078 ! 



42. BRACHYSTBPHANUS, Nees; Benth. et Hook. f. Gen 

 PL ii. 1105. 



Calyx 5-partite nearly to the base; segments equal, linear. Corolla 

 slender, 2-lipped ; tube slender, hardly widened upwards ; lips subentire, 

 or the posticous emarginate, the anticous very shortly 3-lobed. Stamens 

 2 ; filaments glabrous, exserted, about as long as the corolla-lips ; anthers 

 1-celled, muticous; pollen globose, echinate (stachelpollen), or more 

 often nearly smooth with most minute points. Ovary and style 

 glabrous; stigma nearly capitate; ovules 2 in each cell. Capsule small, 

 oblong, shortly stalked, normally 4-seeded. Seeds rugose, without 

 hairs. — Herbaceous (as noted) up to 5 feet. Leaves entire or nearly 

 so. Spikes, or oblong panicles, with many flowers, terminal or axillary, 

 more or less hairy ; outer bracts (floral leaves) prominent, imbricate, 

 or narrow, or (in panicles) small, linear ; inner bracts (or bracteoles) 

 small, linear, or 0. 



Species 8, viz. the 6 here described with 2 in Madagascar. 



In this genus, as Lindau hints, the pollen is 3-banded in B. longijlorus, Lindau ; 

 in other species minutely echinulate, more obscurely banded (always with 3 stopples). 

 Spikes elongate, close ; floral leaves more or less 

 imbricate. 

 Floral leaves obovate or elliptic, glabrate . . . 1. J5. africanus. 



Floral leaves narrow-oblong, ciliate . . . . 2. B. Holstii. 



Panicle condensed, linear ; flowers scarcely pedicelled. 



Floral leaves lanceolate . . . . . . ^. B. longijlorus. 



Floral leaves linear ....... 4. B. jaundensis. 



Flowers panicled ; flowers pedicelled ; floral leaves and 

 bracts minute. 

 Panicle lax; sepals ^—^ in. long, glabrate . 5. B. Occident alls. 



Panicle cylindric ; sepals -^ in. long, viscid-pubescent . 6. B. Mannii. 



1. B. africanus, ^S'. Mom^e in Trans. Linn. >Soc. ser. 2, Bot. iv. 31. 

 Nearly glabrous. Leaves up to 6| by 2 in., tapering at both ends; 

 cystoliths small, numerous on the lower surface ; petiole \-2 in. long. 

 Spikes up to 7 by J in., strobilate ; floral leaves i by ^ in., obovate, 

 acuminate, upper 1 -flowered, lower with 3-2 perfect or imperfect 

 flowers; bracteoles ^ in. long, linear-lanceolate. Sepals 5, sul>equal, 

 J-J in. long, linear, with cystoliths, glabrous, or with a very few short- 

 stalked glands on the margin. Corolla-tube f in. long, linear; lips 



