320 Lxxv. APOCYNEi^. {hjomia. 



few or none. Corolla-tube cylindrical, often very short ; lobes linear or lan- 

 ceolate, valvate in the bud, bearded inside at the base or along the surface. 

 Stamens inserted at or below the middle of the tube, the filaments short. 

 not twisted or very rarely slightly so ; anthers oblong or linear, exserted, co- 

 hering ill a cone or ring round the stigma, each with 2 rigid basal lobes 

 usually devoid of pollen, Hypogynous scales 5, as long as the ovary, free 

 or more or less connate. Ovary 2-celled, with numerous ovules in each cell ; 

 stigma surrounded by a ring or membranous expansion at the base, usually 

 2-lobed. Fruit elongated, nearly terete, separating more or less completely 

 into 2 follicles, leaving the placentas free, either 1 in each follicle or the two 

 united into one between the open follicles. Seeds with a coma or tuft of 

 long silky hairs at the hilum.— Tall woody or slender climbers. Leaves 

 0])posite. Flowers in terminal or axillary corymbose cymes. Bracts small. 



The genus is limited to Australia, unless the New Caledonian EcJntes scahra, Labill., 

 prove to lie a true Lyonsia, aa coujectured by De Candolle. It is, as observed by A.Browrn, 

 eloselj allied to Parsonsia, and usually distinguished by the fruit described as capsular auJ 

 2-valved, leaving a free central placenta in Lyomia straminea, and separating into 2 follicles 

 in Parsonsia; but the real difference is not nearly so much marked as these words vi-^^ 



straminea the 

 tween the val 



imply. The carpels in all the species cohere until their maturity and the dehiscence is the 

 same in all, leaving the placentas free or adhering to the valves at the end only; hut iu L, 

 "''*"""""^' +1,. 2 placentas remain closely connate back to back, and fall off in one piece be- 



ves, whilst in the other species they separate, one remaining in each follicle till 

 It falls with the seeds. A more marked character is that of the valvate corolla-lobes of 

 Lyonsia, more especially pointed out by A. Gray, and almost, if not quite exceptional m 

 Apocyuepe. But even this character is deceptive, and must be observed in the hud, for the 

 overlapping iu some species of Parsomia is so slight that, from the appearance of the 

 expanded flower, the estivation has been described as valvate. F. Mueller now therefore 

 proposes to x^\\x\\i^ Lyonsia with Parsomia. 



Corolla-lobes shorter than or scarcely longer thai, the tube. Slen- 

 der nearly glabrous plants. Cymes loose, few-flowered, mostly 

 terminal. 



Corolla-lobes flat ^, L. iUaclna. 



Corolla-lobes very concave, hood-shaped .!'!*'* 2. Z. iudnpHcata, 



Corolla-lobes lanceolate, not above twice as long as the tube. 



Wabrous^ or mmutely pubescent. Cymes mostly in tcj-minal 

 panicles. 



Leaves lanceolate elliptical or almost ovate. Eastern species. 

 Leaves smooth above. Corolla-lobes bearded at the base 



only. Follicles thin, 2 to 3 in. long, placentas connate . 3. L. straminea. 

 Leaves reticulate above. CoroUa-lobes bearded above the 



middle, FoUicles hard, 6 to 8 iu. long, placentas usually 



separate 4^ X. reticalata- 



Wes long, lanceolate or linear. Western species ! .' ! .' ^. LdiapJuinophleM' 

 lliisty-pubescent or villous. Cymes mostly axillary and opposite. 



Cymes divancately -branched, the flowers not crowded. Calyi- 



segments broad and short 6 L Langiana^ 



Flowers crowded in small clusters on the loosely'-branched 



cymes Calyx-segments narrow-acnte ....... 7. X. larylfiorens. 



vorotla-lobes Imear, 4 or 5 times »« l«rr^ „. ti. * v n 



—, «i -.1 » "* "^^ ^ urues as long as the tube. Cymes co- 



rymbose with numerous flowers 



Inflorescence aU terminal Leave; ovate, membranous . . . 8. Z. latlfolia^ 

 Inflorescence axi lary and terminal. Leaves coriaceous, on long 



petioles, broadly oblong, obtuse . 9 Z oUong^foha, 



Inflorescence in one aiil. Leaves long-lanceolate, acuminate', on ' , . - ,-, 



. snort petioles 10 X* eucahjfi^j^^^^' 



%, 



