Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . h internode with numerous septa (12-16), onehydrotheca and three nematothecae (one median inferior and one pair laterals).Distal part of internode short and terminating just above thecal margin. Hydrotheca sigmoidally curved; abcauline wall very strongly conveximmediately above base, strongly concave above this and with the maximumconcavity at about half height, then widening to margin; base carried forwardswith curvature and taking with it the adthecal ends of three or four internodalsepta; the basal convexity capped
Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . h internode with numerous septa (12-16), onehydrotheca and three nematothecae (one median inferior and one pair laterals).Distal part of internode short and terminating just above thecal margin. Hydrotheca sigmoidally curved; abcauline wall very strongly conveximmediately above base, strongly concave above this and with the maximumconcavity at about half height, then widening to margin; base carried forwardswith curvature and taking with it the adthecal ends of three or four internodalsepta; the basal convexity capped by a hollow perisarcal horn of variable lengthand direction; adcauline wall strongly curved near base, the curvature decreasingsmoothly to margin. A curved adcauline intrathecal septum present in basalregion and close above thecal floor. Margin with one inturned median abcaulinetooth, with the rest of the edge irregularly serrated and often lower at theadcauline side, forming an angle of 50-80° with the distal end of the internode. 128 ANNALS OF THE SOUTH AFRICAN MUSEUM. Fig. 10. Cladocarpus natalensis sp. nov. A-D from the holotype, SAM-H2861, and E-G fromSAM-H1972. A-B. Hydrothecae. C. Phylactocarp, and D, one of its Hydrothecae. G. Part of stem showing cauline nematothecae and origins of two hydro- cladia. Scale in mm/10. THE SOUTH AFRICAN MUSEUMS MEIRING NAUDE CRUISES 129 Median inferior nematotheca free from hydrotheca and seated well belowits base, with two apertures, one terminal and one on upper surface near nematotheca overtopping thecal margin, bifurcated, with two terminalapertures, one more elevated than the other, and one on mesial surface. Phylactocarps borne one on first intern ode of hydrocladium and rarely oneon second internode as well, curved forwards and forming a double row on frontof stem. Phylactocarp bearing a double row of long nematothecae, with manysepta both in the nematothecae and in the main axis. Nematotheca with f
Size: 1291px × 1935px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectnaturalhistory
