242 MESSRS. T. А. SPRAGUE AND J. HUTCHINSON ON 
Our cordial thanks are due to Dr. O. Stapf for kind encouragement and 
ready help during the preparation of the paper; to Dr. A. B. Rendle for 
facilities in studying the material in the herbarium of the British Museum ; 
to Mr. E.G. Baker for friendly criticism; to Dr. A. Engler and Dr. I. Urban 
for the loan of the whole of the African specimens of Triumfetta contained in 
the Berlin herbarium ; and, for the loan of type specimens, to Dr. É. De 
Wildeman, Dr. Hans Schinz, and Dr. А. Zahlbruckner. 
CLAVIS SPECIERUM. 
Sepala extra lepidota. 
Stamina circiter 60; ovarii tuberculi pilosi, setis pluribus terminati. 1. lepidota. 
Stamina circiter 25; ovarii tuberculi minute glandulosi, spinula 
unica terminati 2. amuletum. 
Sepala non lepidota. 
Fructus lignosi, septis falsis 6-10-loculares, loculis monospermis ; 
plante litorales caulibus procumbentibus radicantibus cymis 
solitariis oppositifoliis. 
Fructus glabri ........... ee eh he em ea eee 3. repens. 
Fructus рові... 4. procumbens. 
Fructus non lignosi. 
Fructus indehiscentes, setis debilibus plumosis muniti; суша in 
nodis solitariz. 
Caules procumbentes, gracillimi, multiramosi, foliis palma- 
pun 5. Kirkü. 
Caules erecti vel, si decumbentes, folia non palmatifida. 
Frutices vel suffrutices, 
Folia digitata vel triloba. 
Folia digitata vel profunde partita. 
Foliola vel segmenta oblanceolata ; ovarium 5-6- 
loeulare ...............,,....,,,,,,,,.,.2. 6. digitata. 
Foliola vel segmenta lanceolata; ovarium 2-loculare. 7. macrocoma. 
Folia triloba ,.........................,,....,... 8. trifida. 
Folia indivisa. 
Frutices foliis suborbicularibus tomentellis. 
Ovarii setze spinula unica terminatæ ,............. 9. actinocarpa. 
Ovarii setze spinulis pluribus terminate .......... 10. pleiacantha. 
Suffrutices foliis oblongis vel ellipticis hispidulis .... 11. Sonder, 
Herbs» caulibus annuis e rhizomate ortis, inflorescentia 
terminali paniculata. 
Folia suborbicularia, basi cordata. 
Folia subtus tantum tomentosa .................... 12. geoides. 
Folia utrinque tomentosa.......................... 13. rhodoneura. 
Folia linearia, lanceolata, oblonga vel elliptica. 
Tota planta grosse ferrugineo-tomentosa ............ 14. iomalla. 
Plantæ non ferrugineo-tomentosæ. 
Folia pilis simplicibus et stellatis hirsuta 
Folia non hirsuta ; pili stellati, 
Folia adulta 2-4-plo longiora quam lata ........ 16. Mastersit. 
Folia adulta 6-8-plo longiora quam lata ........ 17. Wehwitschit. 
SP 15. hirsuta. 
