250 XX. TAMARisciNEiE. (W. T. Thiselton Dyer.) [Myricaria. 



stalked plume; embryo ovoid.— Disteib. Europe, Mid- Asia; known spe- 

 cies 4 1 



1. US. g'ernxanica, Desv. in Ann. Sc. Nat. iv. 349 ; bracts ovate-lan- 

 ceolate 3-4 times as long as the pedicels, sepals free lanceolate, stamens 

 connate for half their length. M. bracteata, Royle III. 214, t. 44; Bois$. 

 Fl. Orient. I 763. M. HofFmeisteri, Elotz. Keis. Pr. Waldem. 120, t. 25 (plume 

 sessile). Tamarix germanica, Linn. 



Temperate and Alpine HiMALArA ; from Sikkim to Kdmaom, alt. 10-14,000 ft. — 

 Disteib. Westward to Europe. 



A bush, 4-8 ft. Stem* slender, striate, glaucous-green when young. Leaves linear- 

 lanceolate. Eacemes 1-18 in., spiked, lateral or terminal. Bracts with bioadly mem- 

 branous margins. Sepals about equalling the petals. 



Vak. prostrata, Benth. and Hook. f. (Jen. PI. i. 161 (sp.) ; prostrate, branchlets 

 ascending, often rery short with closely imbricate leaves, seed-plume sessile. — A very 

 Alpine form. 



2. nx. eleg'ans, Royle III. 214 ; bracts ovate about twice as long as the 

 pedicels, sepals connate below, stamens connate for one-fourth, of their 

 length. M. germanica var. longifolia, Herh. Ind. Or. H. f. & T. 



Western Himalaya and Western Tibet, frain Garwhal, alt. 11,500 ft., Boyle, &c., 

 to Ladak, &c., alt. 6-15,000 ft., T. Thomson. 



A bush, with smooth striate slender stems. Leaves oblong-ovate, narrowed at the 

 base. Baeemes 3 in., lateral, lax. Bracts short, acuminate, with narrowly membranous 

 margins. S^ah much shorter than the petals, obtusely triangular at the apex. 



Oedee XXI. ELATINi:.S:. (By W. T. Thiselton Dyer, F.L.S.) 



Minute semi-aquatic or terrestrial herbs or undersbrubs. Leaves oppo- 

 site or whorled, entire or serrate, stipulate Flowers small, axillary, soli- 

 tary or cymose. Sepals and petals each 2-5, free, imbricate in bud. Stamens 

 as many or twice as many as the sepals, hypogynous, free ; anthers versa- 

 tile. Ovary free ; cells and styles 2-5, stigmas capitate ; ovules many, on 

 the inner angles of the cells, anatropous, raphe lateral or ventral. Cap- 

 sule septicidal ; valves flat cuncave or incurved, separating from the axis 

 and septa. Seeds straight or curved, raphe on the concave side, testa often 

 rugose, albumen scanty or 0; embryo cylindric, straight or curved, cotyle- 

 dons smalL — Disteib. Scattered over the world ; genera 2, known species 

 about 20. 



Sepals obtuse, aquatic herbs 1. Elatike. 



Sepals acute, flowers usually 5-merous 2. BEReiA- 



1. EXiATINS, Linn. 



Minute aquatic tender creeping herbs. Leaves opposite or whorled. 

 Flowers very small, axillary, usually only one to each node. Sepals 2-4, 

 membranous obtuse. Petals 2-4. Ovary globose. Capsule membranous; 

 septa evanescent after bursting or adhering to the axis. Seei cylindric, 

 straight or curved, ridged and pitted. — Distktb. Temperate and subtropical 

 regiuns ; species about 6. 



1. E. americana, Arn. in Edin. Jowrn. Nat, Sc. i. 431 ; flowers sessile 

 or nearly so, stamens longer than the sepals. 



