664 CXCI. PROTEACE^E. 



capsule or follicle, 1-2-valved, 1-2-m any-seeded, 1-celled, or 2-celled by a false 

 septum formed by membranes detached from the testa of the contiguous seeds and 

 separable into 2 plates. SEEDS usually ovoid or globose in the nuts, compressed and 

 winged in the follicles, exalbuminous ; hilum basilar or lateral. EMBRYO straight ; 

 radicle sometimes near the hilum, sometimes diametrically opposite to it, always 

 inferkr. 



[Tribes of Proteacew according to Meissner in De Candolle's * Prodromus ' : 



Sub-order I. NUCUMENTACE.B. Fruit an indehiscent nut or drupe. Flowers usually 

 solitary in the axil of each bract. 



TRIBE I. PROTE.S. Anthers inserted at the base of the short spreading perianth-lobes, 

 all perfect (upper rarely imperfect) ; cells 2, parallel, adnate. 1. (Australia). Petropltila, 

 Isopogon, Adenanthos, Stirlingia. 2. (South Africa). Aulax, *.Lcucodendron, *Protca, Lcnco- 

 spermum, Himetes, Serruria, Nivenia, SoroccpJialns, Spatalia. 



TRIBE II. CONOSPERMEJ:. Anthers at first cohering by the adjacent cells, then free. 

 Hypogynous scales 0. Ovary obconic, 1-cellecl, 1-ovuled. (Australia.) Synaphca, Cono- 

 spermum. 



TKIBE III. FKANKLANDIK^E. Anthers perfect, cells adnate to the perianth-tube. Ovule 1. 

 Nut dry, with a pappus-like coma. (Australia.) Franldandia. 



TRIBE IV. PERSOONIE.S. Anthers perfect, inserted on the perianth-segments. Ovules 2, 

 rarely 1. Drupe usually fleshy. 1. (Australia). Bellendena, *Persoonia, &c. 2. (South 

 Africa). Fauria, Brabyum. 3. (America). Andropetalum, *Qwvvna. 



Sub-order II. FOLLICULARES. Fruit dehiscent, 1-2-valved, 1-oc-seeded. 



TRIBE V. GREVILLE^E. Ovules 2-4, collateral. Set-ds without an intervening membrane 

 or substance. 1. (Australia). Helicia, Macadamia, Xylomclum, Orites, Lamlertia, Orevillea, 

 Hakea, Knightia, &c. 2. (Asia). Helicia. 3. (America). Rhopala, Adenostephanum. 



TRIBE VI. EMBOTHRIEJ:. Ovules several, imbricate, in 2 rows. Seeds usually separated 

 by an intervening substance. 1. (Australia). Telopea, Loniatia, Cardwcllia, Stenocarjoits. 

 2. (America). Orcocallis, Embothrium, Lomatia. 



TRIBE VII. BANKSIE.E. Ovules geminate. Seeds usually separated by a woody or mem- 

 branous plate. Flowers in dense cones or heads. (Australia.) Banlisia, Dryandra. ED.] 



Proteaccai, placed byEndlicher in the same class with Elaagncai, Thymelece, Santalaceee, and Laurinece, 

 have been separated from them, with Elccayncre, by Brongniart, and thus form a well-defined and 

 much more natural prroup. These two families, in fact, are closely allied in habit, the simple perianth 

 with valvate aestivation, perigynous stamens, free 1-celled ovary, ovule with inferior micropyle, exalbu- 

 uiinous seed, &c. JEUear/neee only differ in the always regular flower, the stamens alternate with the 

 perianth-lobes in the isostemonous flowers, and the fruit included in the perianth -tube, which is fleshy 

 outside and bony within. 



Proteacea approach Saiitalai'ete in th valvate aestivation, isostemony, and stamens opposite to the 

 perianth-lobes ; but Santalaceee differ in the inferior ovary, ovule, albuminous seed, and superior radicle. 

 Protiacece have also some analogy with Thy mulcts, founded on the absence of petals, the 1-celled ovarv, 

 and the exalbuminous embryo ; but TItymclcee difl'er in the imbricate estivation, the usually diplostemonous 

 flower, the alternation of the stamens \\itli the calyx-lobes in the isostemonous flowers, and the superior 

 radicle. Beyond these, the most important character separating Pro/caeca from the families above-named 

 resides in the micropyle invariably facing the base of the ovary, whatever may be the structure of the 

 ovule and the situation of the hilum. 



