The morpho-anatomical characters of 18 species belonging to six genera of sub-family Rosoideae were investigated. The anatomical characters of both the pericarp and testa were found to be impracticable for species delimitation since they are consistent at the generic level. The same reason rendered the character evaluation invaluable within the species of the same genus. Of the morphological characters the mode of the achene vasculature as well as its ramification varied in the different taxa. The basic number of the achene supply is one median and two lateral strands. The behaviour of the latter, whether distinct or fused, as well as the ramification , or not, of a part or the whole of the vascular skeleton led to the suggestion of a key-like layout which shows the pathway of these character states as being primitive vs advanced.
Mourad, M., & Al- Nowaihi, A. E. (2001). Morpho-anatomical characters of the achene in certain species of sub-family Rosoideae (Rosaceae), a comparative study. Taeckholmia, 21(2), 221-238. doi: 10.21608/taec.2001.12466
MLA
Magdy Mourad; Abd El-Salam Al- Nowaihi. "Morpho-anatomical characters of the achene in certain species of sub-family Rosoideae (Rosaceae), a comparative study". Taeckholmia, 21, 2, 2001, 221-238. doi: 10.21608/taec.2001.12466
HARVARD
Mourad, M., Al- Nowaihi, A. E. (2001). 'Morpho-anatomical characters of the achene in certain species of sub-family Rosoideae (Rosaceae), a comparative study', Taeckholmia, 21(2), pp. 221-238. doi: 10.21608/taec.2001.12466
VANCOUVER
Mourad, M., Al- Nowaihi, A. E. Morpho-anatomical characters of the achene in certain species of sub-family Rosoideae (Rosaceae), a comparative study. Taeckholmia, 2001; 21(2): 221-238. doi: 10.21608/taec.2001.12466