BY W. F. BLAKELT. ^UcJ 



Eiver in the north. The following axe the definite localities. Bow River ("Grows 

 in damp places. Trees up to 30 ft. high and 2 ft. in diameter. Branches brittle 

 and snap like carrots." S. W,. Jackson, No. 997, Dec, 1912) ; Esperanee Bay 

 (Diels and Pritzel, Bot. Jabrb., 35, 1905, p. 175) ; Murray District (E. Pritzel, 

 No. 139, Dec., 1901; in Bot. Jahrb., I.e.); Cannington (R. Helms, No. 996, 

 29-1-1899) ; Canning Plains (W. V. Fitzgerald, No. 1002, Jan., 1903) ; King 

 George Sound (Robert Brown. Quoted by Bentham, B.Fl., iii., 389; B. T. 

 Goodby, No. 312, Dec, 1901) ; Swan River (Drummond, 1st coll. Quoted by 

 Bentham. F'reiss, n. 1608 and others also quoted by Bentham) ; Perth (J. 

 Sheath, No. 1001, Dec, 1910; Dr. J. B. Cleland; also photographs in the 

 National Herbarium, Sydney, showing single-stemmed and Mallee-like plants. No. 

 999; Miss Moore, No. 1000); Wooroloo (Max Koch, No.- 1902, Dec, 1907); 

 Coolgardie (L. Webster, No. 998, 1898); Murchison River (Oldfield, quoted by 

 Bentham, I.e.). 



Economic Uses. 



Nuytsia often exudes a quantity of transparent gum which hardens on ex- 

 posure to the air, and which is said to make a good adhesive mucilage {vide 

 Maiden, Useful Native Plants of Australia, 219; also Fitzgerald, Muell. Bot. 

 Soc, I.e.). 



Host Plants. 



Mr. D. A. Herbert has recently (Journ. Proc. Roy. Soe. W.A., v., 1918-19, 

 72), contributed an important paper on the structure, parasitism, etc., of this 

 plant, in which the following host plants are given, which I have arranged in 

 botanical sequence. 



Gramineae : Cynodon daetylon Rich. Proteaceae : Banksia attenuata R.Br., 

 B. Menziesii R.Br., Stirlingia latifolia Steud. Polygonaeeae : Bumex acetosella 

 L. Rosaceae: Bosa sp. Legiiminosae : Acacia pulchella R.Br., Jacksonia fur- 

 eellata DC, Cytisiis proliferus L. var. alba (Tree Lucerne), Vioia Fabcn L. 

 (Broad Bean). Geraniaceae: Geranium sp. Rutaeeae: Citrus sp. Vitaceae: 

 Vitis sp. DiUenia-ceae : Hibbertia hypercoides Benth. Myrtaceae: Melaleuca 

 Hugelii Endl., M. viminea Lindl., Calythrix flaviescens A. Cunn. Umbelliferae : 

 Daucus Carota L. (Carrot). Epacridaceae : Conostephium pendulum Deless. 

 Solanaceae: Solanum sp. 



I. 2a. Loeanthoideae-Lorantheae-Gaiadendeinae. 



Engl., I.e., Naehtr., p. 125. — Gaiadendrees, van Tiegh., Bull. Soc. bot. France, 

 xHii., 1896, 455. 



Calyculus distinct. Ovary one- or more celled. Embryo clavate; cotyledons 

 2. Endosperm stone-like, deeply cleft. 



2. GaiadendronG. Don. 



Gen. Hist., iii., 1834, 431; Engler et Prantl, Pflanzenfam., iii., 177, and 

 Naehtr.,, iii., 1897, 125; Benth. and Hook, f., Gen. PL, iii., 212.— {Galiodendron) 

 Gaidendron, Endl., Gen., 1839, Sdl.—Gaidendron, Endl., Euchir, 1841, 399. 



Calyx 6-8 toothed. Petals 6-8, narrow, free. Stamens 6-8, inserted on the 

 petals. Style angular, subulate; stig-ma simple. Ovarium oblong-cylindrical. 

 Fruit a drupe, endocarp hard, with 8 longitudinal ribs protruding into as many 



