Acanthopale.] xcvui. acanthace^ (clarke). 03 



mostly on short axillary branches ; bract as long as the calyx, oblong or 

 obovate, green ; bracteoles shorter than the calyx, oblong. ^ 



Species 7 in Tropical Africa, 1 in Madagascar, 1 (at least) in South India. 



This genus comprises the African Strohilartthes of the Genera Plantarum. The 

 species of ^«ro6iZow«A€5, alone retained in that genus by Lindau, have ribbed pollen. 

 Acayithopale is i)wc/^MfocaZ//x, Lindau (not of Anderson nor JJisticJiocalyx, Benth.), 

 and also comprises Paeudostenosiphonium gardnerianum, Lindau. The genera carved 

 out bfxS'^ro6i7mi^Aes on the pollen-character are articificial ; the few African species of 

 Strobilanthes go, however, well together. Piieudostenosiphonium of Lindau differs by 

 having only 2 stamens. 



Inflorescence lax ; flowers (other than the subterminal) 

 solitary. 

 Nearly (including bracts and calyx) glabrous. 

 Leaves more than 3 in. long. 



Racemes lax ; filaments hairy . . . . \. A. laxijiora. 



Eacemes closer ; filaments glabrous 

 Leaves hardly 1^ in. long. Flowers all axillary, 



scattered 

 Innovations hispid. 

 Mature leaves nearly glabrate . 

 Mature leaves hairy on both faces 

 Flowers crowded. (Leaves up to 8-9 in. long.) 

 Heads of flowers on short axillary branches, 

 Spikes terminal, dense, nearly glabrous 



2. A. decempedalis. 



3. A. azaleoides. 



. 4. A. albosetulosa. 



. 5. A. pubescens. 



hispid . 6. .4. confertifhra. 



. 7. A. Buckhoizii. 



1. A. laxiflora, C. B. Clarke. Nearly glabrous. Leaves 8 by f in., 

 tapering caudate at both ends, crenate; petiole up to IJ in. long. 

 Racemes axillary, 2-3 in. long, with few distant flowers; bract J in. 

 long, oblong; bracteoles \ in. long, oblong. Calyx-segments J in. long, 

 oblong; corolla-tube J in. long, funnel-shaped nearly from the base. 

 Filaments very hairy; anthers glabrous, rounded at the base. Style 

 hairy. — Dischistocalyx laxijioims, Lindau in Engl. Jahrb. xx. 13, in Engl. 

 k Prantl, Pflanzenf. iv. 3B. 307, and in Engl. Pfl. Ost-Afr. C. 3G8. 



Upper Guinea. Camer.)ons : Buea, 3900 ft., Preuss, 947 ! 

 IVIozamb. Dist. Gerznan East Africa : Usambara ; in Magamba Forest, Hoist, 

 3840! 



2. A. decempedalis, C. B. Clarke. Shrub 10-12 ft. high {Jfa7in). 

 Leaves 7 by 2 J in., tapering acute at both ends, sparsely hairy, crenate ; 

 petiole up to J in. long. Racemes axillary, IJ in. long, 2-4-flowered ; 

 bract J in. long, spathulate-oblong ; bracteoles and calyx-segments \ in. 

 long, oblong, nearly glabrous. Corolla-tube f in. long, funnel-shaped 

 nearly from the base. Filaments glabrous; anther-cells glabrous, 

 rounded at the base. Style hairy, with one linear-oblong branch ; cells 

 of the ovary 2-ovulate. 



Upper Guinea. Fernando Po, 7000 ft., Mann, 2347 ! 3747 ! 



3. A. azaleoides, C. B. Clarke. A nearly glabrouc, azalea-like bush 

 {H. n. Johnston). Leaves up to IJ- by h in., obscurely crenate, tip 

 obtuse, base tapering ; petiole hardly any. Flowers scattered, axillary, 

 solitary; bract \-l in. long, obovate; bracteoles \ in. long, narrow- 

 oblong. Calyx-segments \ in. long, narrow-oblong, minutely pubescent. 

 Corolla white {H. II. Johnston) ; tube § in. long, funnel-shaped nearly 



