J 



334 ANGIOSPERMAEDICOTYLEDONES 



757. Salicomia L. 



Flowers hermaphrodite and devoid of nectar. 



2429. S. herbacea L. (Warming, ' Ekskursioner ' ; Knuth, * Bl. u. Insekt? 

 a. d. nordfr. Ins.,' p. 126 ; Schulz, 'Beitrage,' I, p. 93.) Schulz says that the flowers 

 of this species are feebly protogynous, but possess persistent stigmas, so that in 

 consequence of the proximity of the anthers automatic self-pollination is easily 

 possible. 



758. Kochia Roth. 



As the preceding species. Gynomonoecious. 



2430. K. scoparia Schrad. (Kirchner, loc. cit.) Kirchner says that this 

 species may be considered anemophilous if the scattered distribution of the very 

 inconspicuous flowers and the structure of stigma and pollen are taken into accou: 

 They are gynomonoeciously distributed, small female ones growing in the leaf-axil 

 on the lower part of the stem and branches, usually in pairs, and the larg 

 hermaphrodite ones on the upper ends of the branches. All flowers have a gre 

 five-leaved perianth, and two long, white, filiform stigmas, thickly beset with lateral 

 hairs, project from the female ones. The hermaphrodite flowers are strongly 

 protogynous, their two stigmas, of the same structure as those of the female on 

 being fully mature before the perianth opens. After they have shrivelled, the stamen? 

 elongate, at first forcing the perianth leaves apart ; later on, however, when the 

 anthers are situated above the perianth leaves, the stamens grow between them, 

 permitting them once more to apply themselves to the ovary ; one after another the 

 red anthers now dehisce successively by means of two longitudinal slits. The fila- 

 ments are stiff and directed obliquely upwards, all the yellow, powdery pollen falling 

 out of the dehisced anthers in a little cloud when the plant is shaken. 



This species is anemophilous. Gynomonoeciously distributed female flowers 

 may be found in addition to the markedly protogynous hermaphrodite ones. 



2431. K. hirsuta Nolte (= Echinopsilon hirsutus il/o^., and Salsola hirsutaZ.). 

 (Warming, 'Ekskursioner'; Knuth, 'Bl. u. Insekt a. d. nordfr. Ins,' p. 126.) As 

 the preceding species. The flowers are homogamous or protogynous, and automatic 

 self-pollination is possible. 



759. Chenopodium L. 

 Usually markedly protogynous, rarely homogamous 

 (C. ambrosioides Z. being the only case). Pollen-flowers ; 

 inconspicuous and almost always devoid of nectar, n 

 ceiving therefore only occasional insect-visits and bein, 

 generally fertilized by means of the wind, although neithi 

 the flowers nor the stamens are easily movable. Somi 

 times andromonoecious or androdioecious. 



aJr^J:L.l:::t!HMZ 2432. C ambrosioides L. (Hildebrand, 'D, 



brand). The flower is upright, Gcschlechts-Vert. b. d. Pfl.,' p. 62.) The flowers 



and the anthers project beyond . ^ , , 



the stigmas, thus rendering auto- this spccics are homogamous. The anthers are situated 

 gamy possible. ^^^^^^ ^^^ stigmas, automatic self-pollination being th 



easily effected by fall of pollen. 



