luce] 



K%t Crsaguri? at Motmiy. 



698 



LTTCRABAN SEED. An unrecognised 

 oil-seed exported from Siam. 



LTJOULIA. The name given by the 

 Nepalese to a tree of the Cinchona family, 

 and latinised to form the generic title 

 of a tree highly esteemed for the ex- 

 ceeding beauty and fragrance of its rose- 

 coloured, somewhat fleshy flowers, which 

 are borne in terminal corymbs. The linear 

 segments of the limb of the calyx are de- 

 ciduous ; the corolla is salver-shaped, its 

 limb five-cleft, with ovate-obtuse .lobes ; 

 the anthers Ave, almost sessile on the 

 throat of the corolla ; stigmas two, fleshy, 

 surmounting a thread-like style; capsule 

 two-celled, two-valved, with many winged 

 seeds. L. gratissima is the best known 

 species. [M. T. M.] 



LUCUMA. A genus of Sapotacece, con- 

 taining between thirty and forty species, 

 all natives of the American continent and 

 the West Indian Islands, extending from 

 Buenos Ayres to Mexico. Some are shrubs, 

 others large trees, sixty to eighty feet 

 high, or more, and, like most plants of the 

 order,possessina: a milky juice.and leathery 

 entire leaves. Their flowers grow in clus- 

 ters upon the sides of the branches, and 

 are succeeded by large roundish fleshy 

 eatable fruits. L.mammosnm, one of these 

 large trees, is a native of the West Indies 

 and tropical America, where it is cultivated 

 for the sake of its fruit, which is called 

 Marmalade, or Natural Marmalade, on ac- 

 count of its containing a thick, agreeably 

 flavoured pulp bearing some resemblance 

 in appearance and taste to quince marma- 

 lade. This fruit is somewhat egg-shaped, 

 three to five inches long, covered with a 

 rusty-coloured skin, and contains usually 

 a single hard seed. L. Caimito, whose 

 fruit is called Caimito in Peru, is smaller 

 than the foregoing, being only about three 

 inches long, but its pulp is softer and 

 superior in point of flavour. [A. S.] 



LTJDDEMANNIA. A genus of orchids 

 proposed to lie separated from Gycnoches, 

 and distinguished by its sessile pollen- 

 masses and minute caudicle, as well as by 

 the form of the lip. It is allied to Laccena, 

 from which the sessile depressed spherical 

 pollen-masses and minute caudicle also 

 distinguish it. L.Pcscatoreiis a Venezuelan 

 species with the habit of Acineta, produc- 

 ing long pendent spikes of buff-yellow 

 flowers, brown inside, with the petals and 

 lip bright yellow. The lip is concave, 

 wedge-shaped at the base, quadrate above, 

 with the sides erect, and with a triangular 

 lobe or tooth in front. [T. M.] 



LUDWIGIA. A genus of onagrads, dis- 

 tinguished from its allies by having the 

 stamens four, equal to the number of 

 petals : and the seed-vessel long and cone- 

 shaped at the end. The species are Indian 

 herbs, growing in marshes: the leaves 

 alternate, narrow, rntire, and shortly stalk- 

 ed ; the flowers yellow, solitary , in the axils 

 of the leaves. ' The name was given by 

 Linnaeus in honour of Ludwig, Professor 

 of Medicine at Leipsic. [G. D.] 



LTJFFA. A genus of Cucurbitacece, con- 

 sisting of monoecious or dioecious herbs, 

 with alternate petiolate rough leaves, sim- 

 ple tendrils, racemose male flowers, and 

 solitary female flowers. The males have a 

 bell-shaped five-toothed calyx, a five- 

 parted corolla, and five stamens inserted in 

 the calyx distinct or in bundles, with one- 

 celled wavy anthers. The females have the 

 calyx tube club-shaped and five-cleft, five 

 petals, abortive stamens, and an inferior 

 three-celled ovary with numerous ovules. 

 The pepo is ovate or oblong, fibrous within, 

 containing many compressed seeds. The 

 species are natives of tropical Asia and 

 Africa. [J. H. B.] 



LTJGAR. An unrecognised tanning bark 

 imported from Singapore. 



LUHEA. A genus of TUiacea?., consist- 

 ing of South American or Mexican trees 

 or shrubs, clothed more or less with stellate 

 down, alternate leaves usually toothed, 

 and showy white or pink flowers either in 

 axillary cymes or terminal panicles. Each 

 flower is enclosed in an involucre of 

 several linear bracts, often longer than 

 the calyx; the petals are thickened at 

 the base, but without any pit or scale ; the 

 stamens very numerous, the outer ones 

 barren ; the capsule hard and woody, open- 

 ing at the top in five valves, and contain- 

 ing several winged seeds in each cell. 

 There are about sixteen species known, 

 most of them very handsome when in 

 flower. The wood of L. divaricata, which 

 is white and light, but very close-grained, 

 is used in Brazil for musket-stocks, wooden 

 shoes, &c, and the bark of L. grandiflora 

 for tanning leather. 



LTJISIA. A genus of inconspicuous 

 epiphytal caulescent erect orchids of tro- 

 pical Asia and America, with terete rigid 

 rush-like leaves, and small dingy green or 

 purplish or yellowish flowers of very littie 

 interest. [T. M.] 



LULTJP. A vegetable touchwood or 

 tinder, exported in large quantities from 

 Labuan. 



LUMBAL The nuts of Aleurites tri- 

 loba and molvccensis, from which an oil is 

 expressed. They are called Candle Nuts. 



LUMBRICAL. Worm-shaped; a term 

 applied to the worm-like lobes of the frond 

 of certain seaweeds. 



LUNAIRE. (Fr.) Lunaria. —GRANDE. 

 Lunaria biennis. 



LTTNANIA. A genus of woody plants 

 inhabiting the West Indies and South 

 America, and belonging to the Samydacem, 

 though hitherto erroneously placed in Fm 

 cowrtiacece. In habit and inflorescence it re- 

 sembles Osmelia. The leaves are ovate, 

 the flowers racemose and often emitting a 

 disagreeable odour. The calyx is from 

 four to five-cleft, the corolla wanting, the 

 number of stamens is from six to ten, and 

 there are scales or staminodia abortive 

 6tamensj interspersed among them. The 

 fruit is an ovate capsule. A<eording to 



