126 C- &• Schneider: Morphologie und Systematik der Siphonogaraen. M26 



Group I. — Leaves not cirriferous (viz., with rachis not prolonged into 

 a filiform aculeate appendix). Leaflets many, elongate. Primary spathes 

 elongate-tubular, dilated and hacerate in their upper part. Spadix with the 

 partial inflorescens and spikelets provided with a pedicellar part which remains 

 included in their respective spathes. Fruiting perianth explanate (not forming 

 a pedicel to the fruit). Involucrophorum of the female spikelets Short, not 

 pedicelliform. Seed with ruminate albumen: embryo basilar or nearly so. 



A. — Stem erect. Leaf-sheaths not flagelliferous. 



1. C. erectus. 



B. Scandent. Leaf-sheaths flagelliferous. 



2. C. flagellum. 



Group IL — Leaves not cirrifereous. Leaflets numerosus, elongate. 

 Primary spathes elongate-tubular, more or less lacerate in their upper part. 

 Fruiting perianth explanate. Involucrophorum short, not pedicelliform. Seed 

 (where known) with equable albumen and basilar embryo. 



A. — Spikelets not inserted at the bottom of their respective spathes 

 and therefore not or very shortly pedicellate. 



f Not scandent. Spadix not flagelliform, and armed only with straight 

 spines (not clawed). 



3. C- arborescens, 4. dougnaiensis. 



ff Scandent. Spadix flagelliform, clawed on the axial parts between 

 the partial inflorescences. 



5. C- longisetus, 6. Thwaitesn, 7 rudentum. 8. leptospadix- 



B. — Spikelets inserted at the bottom of their respective, spathes and 

 provided with a distinct pedicellar part. Not scandent, Spadix not flagelliform. 

 Leaf-sheaths not flagelliferous. 



(The species of this group appear related to those of group XIV, which, 

 however, have cirriferous leaves.) 



9. 0. dilaceraüis, 10. castaneus, 11. Grifft thianus, 12. Burckianus. 



Group III. — Leaves not cirriferous narrow elongate. Leaf-sheaths 

 flagelliferous. Spathes (primary and secondary) elongate-tubular, strictly 

 sheathing. Spadix elongate flagelliform. Spikelets not inserted at the bottom 

 of their respective spathes by means of a pedicellar part. Involucrophorum 

 almost stalked, attached to the bottom of its own spathel (not laterally adnate 

 to the base of the spathel above its own) Fruiting perianth explanate. Seed 

 with equable albumen and basilar embryo; all African. 



13. C. deerratus, 14. Barterii, 15. Heudelotii, 16. falatensis, 17. Leprieurii, 

 18. Perrot tetü, 19. akimensis, 20. Schweinfurthii. 



Group IV. Leaves not cirriferous. Leaflets very few, pinnate, digi- 



tate or radiate. Primary spathes very narrow and elongate-cylindraceous, very 

 closely sheathing. Leafsheaths flagelliferous. Spadices (male and female) 

 simply decompound, very slender and flagelliform; partial inflorescens and 

 spikelets inserted at the mouth of their respective spathes (not with a pedi- 

 cellar part). Fruiting perianth explanate. Involucrophorum not pedicelliform. 

 Seed with equable albumen and basilar embryo. 



21. G. pacliy stem onus, 22. digitatus, 23. radiatus. 



Group V. — Leaves not cirriferous, pinnate (simple and furcate in C. 

 ffabellatus). Leaf-sheaths provided in the scandent species (when not bearing 

 spadices) with a long-clawed flagellum; in the non-scandent species the fla- 

 gellum rudimentary or none. Primary spathes very elongate tubulär, closely 



