Ecological and systematic studies of Ecological and systematic studies of the Ceylon species of Caulerpa ecologicalsystem00unse Year: 1906 no CEYLON MARINE BIOLOGICAL REPORTS. and scarcely dentated and curving upwards, now short and broad, clearly dentated, but not curved. Such different forms of lobes occur both on different leaves from the same rhizome and also on the same leaf. Of forms that have already been described the main mass of my material resembles most closely the V. intermedia, Weber v. Bosse, especially the specimens from the Mauritius (according to specimens in Agardh's Herbar
Ecological and systematic studies of Ecological and systematic studies of the Ceylon species of Caulerpa ecologicalsystem00unse Year: 1906 no CEYLON MARINE BIOLOGICAL REPORTS. and scarcely dentated and curving upwards, now short and broad, clearly dentated, but not curved. Such different forms of lobes occur both on different leaves from the same rhizome and also on the same leaf. Of forms that have already been described the main mass of my material resembles most closely the V. intermedia, Weber v. Bosse, especially the specimens from the Mauritius (according to specimens in Agardh's Herbarium in Lund, No. 16,431) sketched by Weber v. Bosse ('Monographic desCaulerpes,' PI. XXIII, Fig. 7 ). In Ceylon there are, therefore, transition-forms between /. intermedia and /. denti- culata, but on the other hand I have never seen /. typica, Weber v. Bosse (C. scalpelliformis, J. G. Agardh), a characteristic type that seems to be confined exclusively to AustraUa. Structure of the shoots.—Especially charac- teristic of this species is the rich formation of regenerating shoots, precisely as J. G. Agardh (Till xVlgernes Systematik I., p. 13) lias asserted of it. These arise either from the points of the lobes, or from the median part of the lamina. Fig. 2 b shows an (\xample of this kind of regeneration. But t lie leaves could increase in another way too without there being any sharp differ- ence in the shape of a petiole. It seems to be such kind of regeneration to which J. G. Agardh refers when in the description of his C. scalpelliformis {loc. cit. p. 13) he says: ' Frondes saepe quasi innovatione prolongatae, lobis in una parte innovationis brevioribus, dein iterum longioribus,' and a very fine example of this can be seen in a C. scalpelliformis (Herb. J. G. Agaedh, No. 16,425) collected by Harvey in Australia. Another case can be seen in fig. 2 a. The terminal point of growth of the leaf (once situated at v) has after a short period of inactivity, resumed its activity,
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