6 4 8 



THONNINGIA 



Thonningia Vahl. Balaaophoraceae. i trop. Afr. 



Thoracosperma Klotzsch (Simochilits K..). Ericaceae (iv. 2). 5 S. Afr. 



Thoracostachyum Kurz (Mapania p.p. EP.). Cyperaceae (n). i 

 Malaya. 



Thorea Rouy (Avena p.p.). Gramineae (9). i France. 



Thoreldora Pierre. Rutaceae (v). i Cochinchina. 



Thorelia Hance. Inc. sed. i Cochinchina. 



Thorn, a stiff pointed outgrowth, which may be of various origin, e.g. 

 epidermal, Prosopis, Rosa, epidermal with lower tissue (emergence), 

 Ribes, branches, Carissa, Colletia, Crataegus, Gkditschia, Gymno- 

 sforia, Haematoxylon, Hydrolea, Plectronia, flower-stalk, Mesembry- 

 antheinum, leaf, Aziia, Cactaceae, Chuquiraga, Citrus, Limonia, 

 leaflet, Cycadaceac, midrib, Astragalus, Fouqnieria, ovary, Tetra- 

 gonia, petiole, Astragalus, root, Acanthorhiza, Iriartea, stipules, 

 Acacia, Alachaemun, Palinriis, Polygala, Seguieria, Zizyphus; thorn, 

 Crataegns; -apple, Datura; black -, Primus spinosa L.; Kaffir-, 

 Lyciuin ; kangaroo -, Acacia. 



Thorncroftia N. E. Br. Labiatae (vn). i Transvaal. 



Thoroughwort (Am.), Eupatoriitin. 



Thoro-wax, throw-wax, Buplewum rotundifolium L. 



Thorvaldsenia Liebm. Orchidaceae (inc. sed.). i Mexico. 



Thottea Roxb. Aristolochiaceae. 6 Malaya. 



Thouinia Poit. Sapindaceae (i). 15 W.I. , Mexico. Lianes. 



Thouinidium Radlk. (Thouinia p.p. BH.). 

 C. Am. 



Thozetia '. Muell. Asclepiadaceae (n. 3). 



Thraulococcus Radlk. (Sapindtts p.p. BH.} 



Threlkeldia R. Br. Chenopodiaceae (A). 



Thrift, Armeria vulgaris Willd. 



Thrinax L. f. ex Sw. Palmae (i. 2). 15 W.I. (thatch-palm). 

 are used for roofing, and the plants also yield useful fibre. 



Thrincia Roth. = Leontodon L. p.p (Comp.). 



Thrincoma O. F. Cook. Palmae (I. i). i Porto Rico. 



Thringis O. F. Cook. Palmae (i. 2). 2 Porto Rico. 



Thrixspermum Lour. (Sanochilus\^. Br.). Orchidaceae (n. 20). 15 

 Malaya. 



Thrum-eyed (Primula), short-styled. 



Thryallis L. =Galphimia Cav. (Malpigh.). 



Thryallis Mart. Malpighiaceae (n). 8 Brazil, Mexico. 



Thryocephalon Forst. = Kyllinga Rottb. (Cyper. ). 



Thryothamnus Phil. Verbenaceae (i). i Chili. 



Thryptomene Endl. Myrtaceae (n. 2). 22 Austr., esp. W. 



Thuarea Pers. Gramineae (5). i Indomal. , on the coast. 



Thuja (Thuya) L. Coniferae (Pinaceae 38; see C. for gen. char.). 

 6 China, Japan, N. Am., T. occidentalis L. is the American, T. ori- 

 entalis L. the Chinese, Arbor-vitae. The 1. are small and closely 

 appressed to the stems, which show dorsi-ventral symmetry. Cones 

 of 3 or 4 pairs of scales, the uppermost sterile and often united to 

 form the coluinella, the lowest also often sterile. 



\_Synonymy: T. dolabrata Thunb. =Thujopsis dolabrata; T. chi- 

 lensis Don = Libocedrus chilensis; 7'. Doniana Hook. =L. Doniana ; 



Sapindaceae (i). 4 W.I , 



i Austr. 



Sapindaceae (i). 2 India. 

 3 Austr. 



The 



