Bm. Fangan et I. Nordal, A COMPARATIVE-ANALYSIS OF MORPHOLOGY, CHLOROPLAST-DNA AND DISTRIBUTION WITHIN THE GENUS CRINUM (AMARYLLIDACEAE), Journal of biogeography, 20(1), 1993, pp. 55-61
Seven species of the genus Crinum, C. asiaticum L., C. glaucum A. Chev
., C jagus (Thomps.) Dandy, C. latifolium L., C. macowanii Bak., C. po
litifolium Wahlstrom, and C. zeylanicum (L.) L., are included in the s
tudy. The variation pattern in morphology is compared to the variation
pattern found in chloroplast DNA restriction fragment length polymorp
hism (RFLP). The different phylogenies established by cladistic analys
es based on the two different data sets are not in accordance. The var
iation pattern in the chloroplast DNA fits the geographic distribution
pattern of the species analysed better than their morphological varia
tion pattern. East African taxa studied are linked more closely to the
Indian-Pacific ones than they are to the West African ones. If the DN
A cladogram reflects the true phylogeny of the species, it indicates t
hat conspicuous traits in the flower morphology must be due to paralle
l evolution or to reversals. The delimitation of subgenus Crinum and s
ubgenus Codonocrinum is not supported.