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Cfje €ttKg\irv at ^ritai™. 



1172 



alternating with as many large glands ; 

 ovary free, with three parietal placentas, 

 each bearing a single ovule ; styles three ; 

 fruit one-celled, three-valved; seeds three 

 or one. This genus derives its name from 

 the Greek words treis ' three ' and meros ' a 

 part,' indicating the ternary arrangement 

 of the parts of the flower; in this one par- 

 ticular, but in no other, the genus shows 

 a resemblance to endogens. [M. T. M.] 



TRIMERIS. A shrub of St. Helena, 

 constituting a genus of Lobeliacece. The 

 flowers are in axillary racemes ; the calyx 

 is five-cleft, the segments being provided 

 with a thick dorsal nerve ; the corolla 

 consists of five petals, two upper ones free 

 linear, the lower three united into an erect 

 three-lohed lip; and the five stamens are 

 inserted with the corolla on to the upper 

 part of the tube of the calyx, the anthers 

 united so as to form a tube, the two lower 

 ones hairy. The ovary is two-celled, the 

 stigma two-lobed ; and the fruit capsular, 

 bursting from above downwards into two 

 valves. [M. T. M.j 



TRIMESTRIS. Existing for three 

 months. 



TRIMUS. Lasting for three years. 



i TRINCOMALEE-WOOD. The timber of 

 j Berry a Amonilla. 



I TRINERVED, TRINERVIS. Having 

 three ribs, all proceeding from the base. 



I TRINIA. A genus of Umbelliferw, con- 

 sisting of biennial branching herbs, with 



: angular stems, and bipinnatisect leaves, 

 the divisions of which are triternate, and 

 the lobes linear. The numerous many- 



| rayed umbels are paniculate or thyreoid, 

 and without involucres. The flowers are 

 dioecious, or rarely monoecious. The calyx- 

 limb is absent; the petals of the staminal 



I flowers are lanceolate and produced into a 

 slender appendage, which is rolled inwards; 

 the pistilloid flowers have oval petals, with 

 a short appendage, the point of which is 

 bent inwards. The oval fruit is compressed 

 at the side, and the carpels have five fili- 

 form equal ribs, the intervals being with- 

 out vittre, or having but a single one. The 

 genus is indigenous to Central and South- 

 ern Europe, Asia Minor, and the Gape of 

 Good Hope. [W. C] 



TRINODAL. Having three nodes only. 



TRINRAGAN. An Eastern name of the 

 I Palmyra Palm. 



TRIODIA. A genus of grasses belong- 



i ing to the tribe Avenere. The inflorescence 



I is in simple contracted spike-like panicles, 



I the spikelets of which are few-flowered 



and awnless ; outer glumes two, nearly 



equal ; flowering glumes with three small 



teeth at the top. Steudel describes eleven 



species, which are all natives of the South- 



| ern Hemisphere, save T. decumbens, a 



I British representative of the genus, which 



; is a common grass growing on spongy wet 



i cold soils, and not' of much agricultural 



importance. [D. M.] 



TRKECIOUS, TRIOICCS. Having male 

 flowers on one individual, female on an- 

 other, and hermaphrodite on a third. Its 

 sign is J 2 9 • 



TRIOLET. (Fr.) Trifolium repens ; also 



Jlcilti-tiijo lupulina. 



TRIONUM. Hibiscus Trionum. 



TRIOPTERYS. A genus of trailing 

 shrubs, indigenous to Tropica) America. 

 Their flowers are purple or violet, in axil- 

 lary or terminal clusters. Calyx five-Dart- 

 ed, four of the segments having two glands 

 at the base; petals five, stalked, entire; 

 stamens ten, all fertile, alternately long 

 and short, the filaments united at the base; 

 ovary three-lobed, each of the lobes having 

 three crest-like ridges on the outer surface, 

 and each containing a single pendulous 

 ovule ; styles three ; fruit with three wings 

 on each lobe, whence the name of the 

 genus, from treis ' three ' and pteron' wing.' 

 One or two species are cultivated as stove- 

 climbers in this country. [M. T. MJ 



TRIOSTETJM. A genus of Caprifoliacece, 

 consisting of several species of coarse 

 hairy perennial herbs, with large entire 

 leaves tapering to the base but connate 

 round the simple stein; and sessile axillary 

 flowers, solitary or in clusters. The leaf- 

 like lobes of the calyx are linear-lanceolate 

 and persistent; the corolla is tubular, 

 swollen at the base, and flve-lobed; there 

 are five stamens ; the ovary is generally 

 three-celled ; and the fruit is a rather dry 

 triangular drupe, with three-ribbed one- 

 seeded bony nutlets. The species are na- 

 tives of North America and the mountains 

 of Central Asia. [W. O] 



TRIPALEOLATE. Consisting of three 

 pales or palea?, as the flower of a bamboo. 



TRIPARDE, or TRIPARELLE. (Fr.) 

 A kind of Olive. 



TRIPARTED, TRIPARTITE. Parted to 

 the base in three divisions. 



TRIPARTIBLE. Partible into three. 



TRIPE DE ROCHE. This name, or that 

 of Rock Tripe, is given in North America, 

 in consequence of the blistered thallus, to 

 several species of lichens belonging to 

 Gyrophora and Umbilicaria, but especially 

 to the latter, wh ch afford a coarse food, 

 whose nutritive qualities are, however, 

 much impaired by the presence of a bitter 

 principle which is apt to cause serious 

 diarrhepa. Bad, however, as it is, it has 

 proved of the most material service to 

 some of our Arctic voyagers, especially to 

 the expeditions under the lamented Sir 

 John Franklin, though from constitutional 

 peculiarities it is not available to all. In no 

 c;ise, however, did it completely appease 

 the pangs of hunger, probably from its not 

 containing in the proper proportions all 

 the constituents necessary to compose a 

 truly nutritious article of food. Some of 

 these lichens, of large size, have been found 

 on the northernmost Arctic land which has 

 yet been explored. [M. J. BJ 



