

Avicennia] LXXXII. YERBEXACE.K 515 



showed an apparent relation between the number of phloem rings and the age of the 

 its in months. Prain (Flora of the Sundriban 331) separates .4. nlba. Blume(i>«(///i 

 Bden | by lanceolate acute 1. and a narrow conical capsule, In the same place see his 

 remarks regarding the slanting run of the fibres in Avicennia wood. 



Okpek LXXXTII. LABIATE. Gen. PI. ii. 1160. 



Herbs, rarely shrubs, usually aromatic. Essential oil is secreted in hairs 

 with glandular heads or in sessile glands. Branches usually four-sided, 1. 

 opposite or whorled, stipules 0. Fl. zygomorphic, calyx persistent, 4- or 5- 

 toothed or cleft or'2-lipped. Corolla hypogynous, ganiopetalous, 2-lipped, some- 

 times regularly 4-5-lobed, lobes imbricate in bud. Stamens inserted iu the 

 corolla-tube, 4, didynamous, or the 2 upper imperfect. Ovary free, usually 4- 

 lobed, supported by the annular disk, style inserted between the lobes. Ovules 

 4, erect, auatropous. Fr. of 4 one-seeded nutlets. 



A. Calyx two-lipped, stamens 2 Meriandra (p. 515). 



B. Calyx 10-toothed, upper lip of corolla densely white- 



woolly Lk.i'i: as (p. 515). 



C. Calyx 5-cleft nearly to the base, the segments much 



elongated and feathery in fruit .... Colebrookia (p. 515). 



D. Calyx 5-toothed, enlarged in fr. 



Dnarmed. 



Fruiting calyx with 5 spathulate reticulate teeth Kovlea (p. 515). 



Fr. cal. enlarged, but not altered in shape. 



Corolla 1- or 5-lobed, ti. in narrow cylindrical 



srikes Elsholtzia (p. 51(3). 



Cor. deeply 2-lipped, lower lip boat-shaped . 1. Plectranthus. 

 Armed, calyx-limb expanding in fr. into a long 



reticulated 5-angled cup ..... Otostegia (p. 516). 



E. Calyx 5-toothed, not enlarged in fr. 



Stamens long exsert.-d J-l in. long .... I.i i i osi i.n in u I p. 516). 



Stamens not much exserted. 



Filaments hairy, corolla J in. long . . . Pogostemon (p. 516). 



Filaments glabrous, corolla |-1 in. long, nutlets 



winged at apex ...... 2. COLQUBOUNIA. 



Meriandra strobilifera, Benth. ; Collett Simla Fl. 393, fig. 125. N. W. Himalaya. 

 Butlej to Sanla. 1-7.0UO ft. A small aromatic shrub, branchlets and underside of 1. 

 white-woolly. L. thick, crenulate, gradually narrowed from a broad hastate base, 

 upperaide prominent ly rugose, blade 'J- I, pet.} in. long. Fl. small, white, in tomentose 

 dense cylindrical spikes, bracts imbricating, hard, almost woody in fr. Fertile 

 stamens 2, anther-cells separate pendulous from a long connective. 



Leucas lancesefolia, Desf . ; Wight h. t. 1452. N'ilgiris. A large often gregarious 



shrub, branches and underside of 1. soft-tomentose, I. Ian< late, entire, blade 3-5, 



ii.ii rowed into pet. \ in. long. Fl. white in distant whorls, bracts linear, hairy, nearly 

 as long as calyx. Calyx I in. long, teeth 10, minute, spinulose. I lorolla '-'-labiate, upper 

 li]i concave, densely white-woolly outside. 



Colebrookia oppositifolia. Smith. — Syn. ('. Urnifolia, Roxb. Cor. I'l. t. Jl">. Vern. 

 Dathanf, Pb.j Binda, Bindu, Hind. ; Chota Bhanaara, Melghat, Subhimalayan tract 

 and valleys, ascending to l.filKI ft. I 'nn jab Salt range. Singbhum. Central provinces. 



Berar. Western Peninsula. Tenasserim. Shan hills, Upper Burma, Sills east of 



lili.inio, t.iKNi fi. China. A large shrub or small tree, stem deeply channelled, 

 branches, petioles, underside of leaves and inflorescence densely clothed with soft 

 whitish (omentum. 1.. opposite Or in threes, elliptic-lanceolate, crenulate. blade 



•"• 12, pet. f-lj in. long. sec. n. 12 18 pair, prominent beneath. Fl. often polygai is, 



in sessile 4-6-fld. heads, each head supported by numerous hirsute bracts, the heads 

 arranged in long paniculate spikes. Calyx divided nearly to the base into 5 linear 

 teeth, lengthening out in fr. and then capillary and feathery. Corolla white, minute, 

 tube short, lobes I. Nut, usually one. inly, hairy. 



Koylea elegans, Wall. PI, .V-. Bar. t. 74. Vern. Knur. Ph. ; Karanoi, Jauns. j TilpOti, 

 Garhw. (inter Nort h West Himalaya, Kashmir t.. Eumaon 2-6,000 ft A small shrub, 



branchlets and underside of 1. softly tomentose. I., ovate, deep-ercnaU'. sometimes 



