Colquhounia] LXXXIII. LABIATE 517 



wards. Khasi hills, Manipur. Upper Burma. Branclilets and 1. clotlied with, stellate 

 hairs, in some forms (C vest if a) white tomentose, calyx-teeth triangular, hairs on 

 corolla often glandular at the tip, wing of nutlets more or less laciniate, shorter than 

 seed. 2. C. elegans, Wall. Manipur. Martaban hills 4-5,000 ft. Upper Burma. 

 Yunnan. Branchlets and 1. slightly pubescent with, simple liairs, calyx-teeth 

 acuminate, hairs on corolla of 2-3 cells, not glandular at tip, wing of nutlets entire, 

 as long as seed. 



Oedee LXXXIV. NYCTAGINACE^. Gen. PL iii. 1. 



(Nyciaginese.) 



Mostly herbsj a few genera of shrubs and trees. L. usually opposite, stip. 0. 

 Fl. often involucrate, perianth gamopetalous, the lower portion persistent, 

 enclosing the fr. Stamens hypogynous, filaments as a rule connate at base, 

 usually unequal. Ovary free, more or less oblique, 1 -celled, ovule one, basal. 

 Tr. dry, indehiscent, radicle inferior, albumen soft or mealy. 



The woody species of the three Orders: Nyctaginacece, Amaranfacece and Chenopodiacece 

 have an anomalous structure. The vascular bundles remain distinct and are arranged 

 in more or less interrupted concentric belts, separated by interfascicular prosenchy- 

 matic (rarely parenchymatic) tissue. A number of vascular bundles are frequently 

 found in the pith. In some cases, as in Haloxylon^ the interfascicular tissue consists 

 of sclerotic fibres, giving the appearance on a transverse section of concentric hard 

 liorny layers, alternating with interrupted bands of softer tisbue with groups of 

 vessels. 



BoTigainviUsea spectabilis, Willd. Commonly grown in gardens. A large scrambling, 

 more or less thorny shrub of South America, 1. alternate, fi. in threes, perianth cylindric 

 each fl. adnate to a large jDurple bract. 



PISONIA, Linn. ; M. Brit. Ind. iv. 710. 



Trees or shrubs, 1. usually entire and opposite. EL in corymbose cymes 

 with minute bracteoles, usually dioicous. Perianth 5~10-toothed, stamens 

 6-10, exserted. Er. mox-e or less 5-angled, cotyledons convolute, enclosing the 

 scanty soft albumen. Species 40, tropics of both hemispheres. 



A. Armed. 



1. p. acTileata, Linn. ; Wight Ic. t. 1763-4 ; Bedd. Manual t, 22. Western Peninsula, 

 often forming impenetrable thickets. Andamans and Tenasseiim, near the coast. 

 Ceylon. Sea coast, tropics of both hemispheres. A large straggling or climbing shrub, 

 young shoots and inflorescence pubescent, armed with sharp axillary more or less 

 curved thorns. L. glabrous, blade 2-8, petiole J-J in. long. Fl. greenish-white in 

 compact sometimes paniculate axillary cymes. Fr. on long slender pedicels, oblong, 

 blunt, pubescent, J-| in, long, faintly 5-angled, with. 5 double lines of viscid 

 protuberances. 



B. Unarmed. 



2. p. al"ba, Spanoghe. — Syn. T. mormdcefolia^ E. Br. ; Wight Ic. t. 1765. Beach 

 forests of the Andamans. Malay Archip. Often grown in gardens (the Lettuce Tree). 

 A middle-sized evergreen tree, glabrous except youngest shoots and inflorescence. L. 

 elliptic, blade 6-10, pet. ^-l^ in. Fr. on long slender pedicels, club-shaped, ^-| in. 

 long, with 5 single lines of protuberances. 3. P. excelsa, Blume. — Syn. P. umhej lifer a^ 

 Seem. Andamans Malay Archip. L. alternate, opposite or whorled, blade 12, 

 pet. 1 in. long, fr. 1-1 J in. long on short stout pedicels, angles without glands or 

 protuberances. 



Oedbr LXXXV. AMARANTACE^. Gen. PI. iii. 20. 



Mostly herbs. L. opposite or alternate, stipules 0. El. supported by bracts 

 and bracteoles, in terminal simple or panicled spikes. Perianth of 5 sepals, 



