74 The Vegetable Individual in its relation to Species. 
ee Ey tea Abyssinica.* Among the most striking 
cases of dimorphous flower-formation are those described by Jus- 
sieuy in Gleudlickeretia: Camarea, and other Malpighiacee,. ~ 
Here, besides the flowers conjoined in racemes or in corymbs, 
the leaves. Besides the normally formed glandulose corolla, 
they have only one stamen and two carpels. In several cases 
the dimorphism of the flowers is confined to the formation of 
the fruit alone, as, e. g., in some species of Athionema, (espe- 
cially 47. heterocarpum, Gay,) which in the same raceme bear 
partly dehiscent silicles with two cells and several seeds, and 
partly one-celled and one-seeded indehisceut silicies. eratocap- 
nos,{ a North African genus of Fwmariace, bears in the lower 
part of the spike oval, ribbed, one-seeded nutlets, and in the 
upper part, lanceolate two-valved and two-seeded siliques. Poly- 
morphism of flowers and fruit occurs in the most heterogeneous 
manner in the family of Composite ; I will only refer to Zinnia, 
Dimorphotheca, Heierotheca, Thrincia, Geropogon, Crupina ; 
and especially to Calendula, where the. hermaphrodite blossoms 
of the ray produce three different forms of fruit, so that, includ- 
ing the male flowers of the disc, the capitulum presents four dif- 
ferent forms of flower-shoots (belonging to the same generation). 
As somewhat similar cases in the animal kingdom, the instances 
of dimorphal insects, of which there ane ‘panagse might be ad- 
ced. 
A separation of the series of generatioris into several dist 
lines occurs in fact not only as regards the flower, but also, though 
Jess frequently, even among the ‘inferior formations ‘of the plant; 
this is especially the case where a particular lateral fine js allotted” 
to the leaf as well as to the flower, The true Pines afford the - 
growth,|| which lie outside of the line which leads to the two 
kinds of flowers, while they are essential as the leaf-formation 
* Hochstetter: in Schimp. Iter Se fe No. 572 et 1701. The same eat is called 
Nephrophyllum re meats cum by Richard: Tent. Flor. Abyss., and figured in pl. 76. 
Sreclga o kinds o aes are emitted Hn om the axils ot the foliaceous leaves of the 
creeping stem; those i. with corolla, s ns and pistil stand upright; 
theo sees withoat | corolla and stamens, bend down S vey ground on their long pe — 
Adr, de Jussi : Monographie des Malpighiaceés. (1843.) 
of Prat: Eeplos, seient. de l'Algérie, pl. 78. Endlicher : Gen. plant., ae 
Pp. 
first in several species of es ey: (D. marginalis, cireumeinetus, 
cus, Reselii, peccnding. | to Erichson : Gen. Dyticeorum, 1832, p.31; the last i in ayers 
or wercus according to ree 
That the fascicles of rs in Bina ar bans i ed by lh eS 
non of percrescence, W, which is not un in ag a agit fe 4 
