669 



CTjc Crcasuru af 23otan». 



[lent 



eneu ring.a five-lobed staminal crown, with 

 the leaflets undivided, erect pollen-masses, 

 and a scarcely divided stigma. L. australis 

 is a climbing shrub.witb linear acute leaves, 

 and flowers in fascicles. [T. M.] 



LEIOCARPUS. A genus of Euphorbia- 

 cece, established by Blume for two Javanese 

 shrubs referred to the tribe of Buxece, but 

 the precise affinities of which are as yet 

 very imperfectly known. 



LEIOPHFLLUM. A genus of heatbworts, 

 having the calyx in five deep divisions ; 

 and the capsule five-celled, opening by 

 as many valves at the top, and containing 

 numerous small ovate seeds. The only spe- 

 cies is a native of New Jersey, where it is 

 called Sand Myrtle. [G. D.] 



LEIOSPERMUM. A genus of Cunonia- 

 ceoz, allied to Weinmannia, differing in the 

 deciduous calyx, and the flat mot urceolate) 

 disk; the seeds also are glabrous, not hairy. 

 They are New Zealand trees or shrubs, with 

 opposite simple or pinnate leaves, having 

 jointed leaf-stalks and caducous stipules ; 

 and the flowers are racemose. [J. T. S.] ■ 



LEIOTHAMNUS. A genus of Gentia- 

 nacece, represented by an Andean shrub, 

 with opposite stalked leaves, axillary in- 

 curved flower-stalks provided with large 

 bracts, a wingless calyx with five over- 

 lapping concave divisions, a salver-shaped 

 deciduous corolla, its limb divided into five 

 slightly unequal lobes, and five stamens in- 

 serted into a ring-like membrane, liningthe 

 base of the tube of the corolla, the anthers 

 arrow-shaped, finally revolute. [M. T. MJ 



LEMAIREA. A genus of Goodeniacecc, 

 proposed by De Vriese for an Amboyna 

 plant, resembling a Sccevola, except that 

 the style is said to be deprived of the indu- 

 sium considered as characteristic of the 

 order. 



LEMANEA. A curious genus of green- 

 spored Algce belonging to the natural order 

 Batrachospermece, consisting of one or two 

 species which grow mostly in sub-Alpine 

 torrents. The first growth is precisely 

 that of a conferva, but the walls of the 

 frond at length become cellular, and are 

 coated within with two or three layers of 

 colourless cells, which give off tufts of 

 necklace-like threads, the ultimate joints of 

 which are the spores. It is, in point of 

 structure, like a Batrachospermum, turned 

 inside out. L.fluviatilis and torulosa occur 

 not unfrequently in this country, the latter 

 also in North America. [M. J. B.] 



LEMMAPHYLLtJM. Brymoglossum. 



LEMNAC&ffi. A synonym of Pistiacece. 



LEMNA. The Duckweed, the typical ge- 

 nus of Pistiacece. The species have, a mem- 

 branous urn-shaped spattae or flower sheath; 

 flowers proceeding from immediately below 

 the edge of the frond ; stamens one to two ; 

 anthers two-celled. The plants float on 

 water, and are propaeated chiefly by buds. 

 The ' green mantle of the standing pool ' is 



. formed chiefly by L. minor. There are six 

 species, natives of Britain. [J. H. B.] 



LEMONIA. A genus of Eutaccce, named 

 in honour of Sir Charles Lemon, an en- 

 lightened patron of science and of horticul- 

 ture. L. spectabihs is a Cuban shrub with 

 ternate leaves, and axillary clusters of 

 beautiful rose-coloured flowers, recognised 

 by the following characters : calyx of five 

 sepals, the two outer much larger than the 

 three inner ones ; corolla salver-shaped, 

 with an oblique five-parted limb ; stamens 

 five, attached to the hairy inner surface of 

 the corolla tube, two fertile sessile, three 

 sterile, projecting from the tube, horned, 

 glandular ; ovary five-celled, surrounded by 

 a lobed disk ; stigma five-lobed. Fruit of 

 five two-valved carpels each with one 

 seed. [M. T. MJ 



LEMON. The fruit of Citrus Limonum. 

 There are many varieties, some of which 

 bear the names of Citron, Cedrate, Genoa, 

 | or Wax Lemons. — , JAVA. Citrus java- 

 nica. — , MEDIAN. Citrus Medica. — , 

 PEAR. A variety of Citrus Limetta. — , 

 PEARL. Citrus margarita. — , SWEET. 

 Citrus Immia. —.WATER. Passiflora lau- 

 rifolia. — , WILD. Podophyllum peltatum. 



LEMON-COLOURED. The purest yel- 

 low, without any brightness ; as in a lemon 

 when ripe. 



LENS-SHAPED. The same as Lenticu- 

 lar. 



LENTIBUL ARI ACE.E. ( Utricidariece, 

 Utriculinece, Butter worts.) A natural order of 

 dicotyledons, belonging to Lindley's bigno- 

 nial alliance of perigynous Exogens. Herbs 

 growing in water or in wet places, with 

 radical leaves, which are either undivided 

 or cut into filiform root-like segments.bear- 

 ing little bladders ; and producing irregu- 

 lar showy flowers. Calyx divided, persis- 

 tent ; corolla bilabiate, irregular ; stamens 

 two, included, with one-celled anthers; 

 ovary superior, one-celled, with a free cen- 

 tral placenta. Fruit a one-celled capsule; 

 seeds exalbuminous. Most abundant in 

 the tropics. There are four genera, and 

 about 180 species. Pinguicula and Utricu- 

 laria are familiar examples. [J. H. BJ 



LENTICELLiE (adj. LENTICELLATE). 

 Lenticular glands. Rudimentary roots ap- 

 pearing on the surface of the stems of many 

 trees in the form of small conical swell- 

 ings. 



LENTICUL.E. The spore-cases of cer- 

 tain f ungals. 



LENTICULAR, LENTIFORM. Lens- 

 shaped ; resembling a double convex lens. 



LENTIGTNOSE. Covered with minute 

 dots, as if dusted. 



LENTILS. The seeds of Ervum Lens, 

 from which Revalenta Arabica is prepared. 



LENTILLE, or L. COMMUNE. (Fr.) Er- 

 vum Lens. — D'EAU. Lemna miliar. — 

 D'ESPAGNE. Lathyrus sativus. 



