BECCARL MONOGRAPH OF TH! GENUS CALAMUS. 65 
of iis 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. 
18. C. deerratus, | 14. Barteriil, 15. Heudelotii, 16.  falabensis, 17. 
Leprieurii, 18. Perrottetii, 19. akimensis, 20. Schweinfurthii. 
Group IV.—Leaves not cirriferous. Leaflets very few, pinnate, digitate or radiate. 
Primary spathes very narrow and elongate-cylindraceous, very closely sheathing. Leaf- 
eheaths flagelliferous. Spadices (male and female) simply decompound, very slender and 
flagelliform ; partial inflorescences and spikelets inserted at the mouth of their respect- 
ive spathes (not with a pedicellar part). Fruiting perianth explanate. — Involucrophorum 
not pedicelliform. Seed with equable albumen and basilar embryo. 
21. C pachystemonus, 22. digitatus, 23. radiatus. 
Group V.—LZeaves not cirriferous, pinnate (simple and furcate in C. flabellatus). 
Leaf-sheaths provided in the scandent species (when not bearing spadices) with a 
long-clawed flagellum ; in the non-scandent species the flagellum rudimentary or none. 
Primary spathes very elongate tubular, ‘closely sheathing, sometimes split longitudinally 
in their upper part, but never entirely opened longitudinally and laminar. Spikelets 
inserted at the mouth of their respective spathes, Involucrophorum not pedicelliform, 
Seed (where known) not ruminate ; embryo basilar. 
A.—BSecondary spathes, spathels and involucra conspicuously scabrid. 
+ Leaflets few, inequidistant. 
24. ©. ruvidus, 25. scabridulus, 26. muricatus, 27. zonatus 
tt Leaflets rather numerous, equidistant. 
28. C. radulosus, 29. rugosus. 
B.— Secondary spathes, spathels and involucra not or very slightly scabrous. 
(1) Fruiting perianth (where known) explanate or subcallous at the base, not or 
slightly pedicelliform (distinctly pedicelliform in C. dioicus), 
+ Leaves simply furcate. 
30. C. flabellatus. 
tt Leaves pinnate with few often broad lanceolate or elliptic or more 
rarely elongate, 3-5-costulate leaflets, all the costz reaching the apex. 
| * The two terminal leaflets highly connate, acute or acuminate. 
31. €. javensis, 32. filiformis, 33. corrugatus, 34. papuanus, 39. 
filipendulus, 36. gonospermus, 87 floribundus, 38. interruptus." 
** The two terminal leaflets slightly connate or free at the base, 
acute or acuminate. 
39. C. dioicus, 40. schistoacanthus,? 41. Kingianus, 42. Muellerii. 
(), C) Doubtfully placed here, the spadices and the fruit being unknown. 
Ann. Roy. Bor. Garp. Catovrra Vor. XI. 
