DISTRIBUTION OF THE GENERA. 9 
D. Seeds anatropous with an apical coma. 
Crass III. ECHITEJE: seeds linear oblong compressed or terete, often with an 
elongated rostrum terminated by the micropyle, which is surrounded by a cup-shaped 
ring, bearing a crown of 1 or 2 series of long hairs, usually called a coma. 
Tribe 15. MacrostrHoNIEA : 2 very long subtorulose follicles, dehiscing along the ventral suture, 
the narrow margins of which are inflected and seminiferous: seeds linear oblong com- 
pressed, with an apical coma. Low erect, or prostrate plants, with a few axillary handsome 
flowers, having an extremely long narrow tube with a broad rotate border. 
Macrosiphonia. 
Tube 16. Srirrcomea#: 2 follicles with very thick pericarp, sometimes very long, rugous or 
verrucose, dehiscing along the ventral suture, cither with 2 placentas conjoined by a keel 
attached to the suture and then detaching itself, or else narrower remaining separately 
attached to the suture: seeds elongated, terete, often with a long rostrum, suspended by 
a longer or shorter funicle, with an expanded apical coma: embryo in albumen, with a 
superior radicle. 4 
Stipecoma, Rhynchodia, Roupellia, Retinocladus, 
Chonemorpha, Strophyanthus, Rhodocalyz, Haplophytum. 
Tribe 17. Wr1GHTIEX : an oblong 2-celled capsule, splitting septicidally through a thick bila- 
mellar dissepiment (becoming like 2 follicles), each cell gaping in the line of the axis, its 
introflected margins being seminigerous: seeds inverted, the coma pointing downwards : 
embryo without albumen, the cotyledons convoluted. 
Wrightia, Kicksia. 
Tribe 18. Prestonizx: an oblong 2-celled capsule, splitting septicidally, as in the preceding 
tribe, the sutural margins being inflected, subseptiform and seminigerous: seeds many, 
imbricated, oblong, furnished at the apex with a long coma, near which they are suspended ; 
the radicle of the embryo points to the coma. 
Prestonia, Aptotheca, Balfouria, Aganosma, 
Nerium, Rhaptocarpus, Lyonsia, Heligme. 
Parsonsia, Beaumontia, Villaris, 
Tribe 19. D1PLADENIEX : 2 long terete follicles dehiscing along the ventral suture, which is 
inflected into 2 parallel placente, bearing many oblong seeds suspended from a point near 
the long apical silky coma: embryo in albumen, with a superior radicle. The chief pecu- 
liarity consists in a disk of 2 flat opposite lobes alternating with the ovaries. 
Dipladenia, Homaladenia, Prestoniopsis, Carruthersia. 
Micradenia, 
Tribe 20. Prosecuitezx : 2 oblong or terete follicles, dehiscing along the ventral suture, which 
is inflected into 2 parallel or 1 combined placenta, bearing many sublinear seeds suspended 
from a point where the longitudinal raphe terminates, and which are crowned with a long 
silky coma: embryo in albumen, with a superior radicle: disk urceolate, entire, or more 
often partly cleft into 5 or 10 lobes. 
C 
