Archive image from page 256 of Dansk botanisk arkiv (1913-1981). Dansk botanisk arkiv danskbotaniskark02dans Year: 1913-1981 Fig. 5. Cym. isoétifolia. Transverse sections of leaf-blades, a, of foliage leaf, from Ceylon; b, of foliage leaf from Carnarvon; c, of inflorescence leaf from Carnarvon. The black points represent the veins, the circles the lacunæ. (About saf1 nat. size.) Fig. 6. Cym. mana- torum Aschers., from St. Croix, Danish W. Indies. Transverse sec- tion of leaf-blade. (About 20/t nat. size.) in C. isoétifolia sometimes may be reduced to 4. The specimens from Carnarvon had 6—7 l
Archive image from page 256 of Dansk botanisk arkiv (1913-1981). Dansk botanisk arkiv danskbotaniskark02dans Year: 1913-1981 Fig. 5. Cym. isoétifolia. Transverse sections of leaf-blades, a, of foliage leaf, from Ceylon; b, of foliage leaf from Carnarvon; c, of inflorescence leaf from Carnarvon. The black points represent the veins, the circles the lacunæ. (About saf1 nat. size.) Fig. 6. Cym. mana- torum Aschers., from St. Croix, Danish W. Indies. Transverse sec- tion of leaf-blade. (About 20/t nat. size.) in C. isoétifolia sometimes may be reduced to 4. The specimens from Carnarvon had 6—7 lateral veins in the foliage leaves, but only 4 in the short leaf-blades of the inflorescences, and specimens from Ceylon had 9—10 'lateral' veins (see Fig. 5). On the other hand in all the leaves of C. manatorum from the West Indies examined by me the number of lateral veins was only two (Fig. 6), as stated by Sauvageau. We have thus in this character a distinctive mark of value, which is the more desirable because the other characters taken from the leaves do not stand on closer examination. The inflorescence of the two species of the subgenus Phycoschoenus is very charac- teristic1, and is the same in both species. The diagram- matic figures (Fig. 7) of young male and female inflorescences from Carnarvon show their cymose character better than drawings of the inflorescences themselves (Fig. 4). The cyme begins two-sided, but the younger parts are one-sided. The prim- Fig. 7. Cym. isoétifolia, from Carnarvon. Diagrams of female and male inflor- escences, with flowers, leafy-bracts and prophylla. 1 P. Magnus has described the inflorescence of C. manatorum in Sitzber. Naturforsch. Freunde, Berlin, 19. März 1872. Dank Botanisk Arkiv, Bd. 2. Nr. 6. 2
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