52 xcviTi. ACANTHACE/E (clarke). [Metier a. 



segments united half their length. Corolla-tube J in. long; lower 

 lip I in. long, with :) lobfib. Anther -cells spurred at the base. Style 

 hairy. 



Mozaxnb. Dist. Nyasaland ; Lufua, Descamps. 



Lindau says capsule unknown, and does not mention the ovules, but says he has no 

 doubt about the genus of this plant. The corolla appears small for Mellera. 



11. PAULOWILHELMIA, Hochst. ; Benth. et Hook. f. Gen. 



PI. ii. 1070. 



Calyx deeply divided into 5 subequal linear segments. Corolla 1-8 

 in. long ; tube linear, or (in sect. Eeteradelphia) inflated in the upper 

 part ; lobes 5, contorted in the bud, subequal, all to one side in the 

 typical species. ' Stiimens 4, subsimilar ; anther-cells 2, not spurred ; 

 pollen long ellipsoid, ribbed lengthwise. Style with one linear-oblong 

 branch, the other very short or ; ovary with 8 or more ovules, glabrous. 

 Capsule cylindric, usually perfecting 6-16 seeds. Seeds nearly glabrous 

 on the faces ; margin with very many hygroscopic hairs. — Shrubs. 

 Leaves long-petioled, ovate, irregularly (often coarsely) toothed. 

 Flowers in scorpioid axillary lax cymes, running into a quasi- 

 terminal panicle ; bract ovate, deciduous ; bracteoles small or 0. 



Species 5, endemic in Tropical Africa. 



* Typic^:. Corolla-tube linear almost to the small mouth ; 

 lobes 5, subreflexed, all on one side. (The 4 species 

 here recorded have been estimated but one by a com- 

 petent botanist.) 

 Capsule seed-bearing from the base, usually perfecting 

 more than 4 seeds. Calyx segments united ^ the 



way up. 

 Calyx \ in. long ; capsule h-^ in. long 

 Calyx more than f in. long ; capsule | in. long . 

 Capsule usually perfecting 4 seeds, contracted at the base 

 Calyx divided nearly to the base, glandular 

 Calyx-segments united l^ the way up . 



1. /". pob/spei-ma. 



2. P. togoeyisis. 



3. P. Sclerochiton. 



4. P. speciosu. 



** Heterauelphia, Corolla-tube gradually widened 

 upwai-ds into an oblique mouth. Nerves of leaves 

 prominent : corolla-tube 2 in. long . . . . 5. P. vohilis. 



1. P. polysperma, Benth. in Hook. Niger Fl. 479. Stems glabrate. 

 Leaves 2-5 in. long, ovate, truncate or subcordate at the base, irregu- 

 larly toothed or lobed, sparsely pubescent or nearly glabrate ; petioles 

 1-2J in. long. Cymes 1-2J in. long, lax, divided, subscorpioid ; bract 

 and bracteoles deciduous. Calyx-segments \ in. long, united more than 

 J their length, sparsely hispid without, hairy within, cystoliths pro- 

 minent. Corolla purple {Cummins) \ tube 1^ in. long, ' linear, hardly 

 dilated even at the top ; lobes \ in. long, elliptic, all on one side, mauve. 

 Capsule \-\ in. long, usually perfecting 8 (or more) seeds from the 

 base. — Lindau in Engl. & Prantl, Pflanzenf. iv. 3B. 301. F. glabra., 

 Lindau in Engl. Jahrb. xxii. 115. 



