SOME SPECIES OF SALICORNIA 183 



occurrence and distribution of the strengthening spicular cells and 

 the water-containing spiral cells which occur in the tissues of the 

 species of Salicornia ; but it may here be mentioned that S. cjracil- 

 linia and S. disarticulata are the only annual species in which 

 spicular cells have been found. It is difficult to understand why 

 Townsend {loc. cit.) placed the plant under S, pusilla. 



9. Salicornia disarticulata, sp. nov. (Plate 514). 



S. (disarticulata), colore flavo-viridi, ramorum apicibus rube- 

 scentibus ; erecta, rigida, ramosissima, culmo circiter 15-16 cm. 

 alto ; segmentis brevibus, ad maturitatem facile disarticulantibus, 

 (circiter 2-5 mm. longis) ; spicis terminalibus brevibus (circiter 

 2-6 mm. longis), segmenta 3-6 exhibentibus, spicis lateralibus 

 brevissimis (circiter 1-3 mm. longis). Differt ab omni alia specie 

 quippe quae spicarum segmenta singulos modo flores exhibent. 

 Spicse etiam cellulas tum spirales cum spiculares continent. 



This species, distinguished by the ease with which the seg- 

 ments disarticulate at or just before maturity, and by the solitary 

 flowers, occurs in the south of England (Norfolk, Hampshire, and 

 the Isle of Wight) and north France (the Bouche d'Erquy). It is 

 characteristic of the drier parts of salt-marshes, and frequently 

 grows among turf of Glyceria maritima. S. disarticulata is, in its 

 anatomical characters, related to S. gracillima ; but its loosely 

 attached segments and its constantly uniflorous "cymes" keep it 

 separate from this and from all the other species of the genus. 

 Subsection Prostrated. Plants prostrate or procumbent ; stamen 1 ; 

 hairs of seeds crozier-shaped. 



The species of this subsection have been very greatly confused. 



10. Salicornia Oliveri, sp. nov. 



S. (Oliveri), colore fusco-viridi, apud autumnum ad flavo- 

 viridem tendente ; prostrata, culmo cix'citer 18 cm. longo, ramis 

 duobus infimis in obtusos angulos pandentibus ; figurse triangu- 

 lari approximans ; ramis paucis, nunquam non prostratis ; seg- 

 mentis sterilibus circiter 8-15 mm. longis ; spicis cylindricis 

 robustissimis, obtusis, circiter 25-40 mm. longis, 7-10 segmenta 

 habentibus ; floribus subsequalibus — flore centrali partem segmonti 

 dimidiam longe superante — cellulis cum spiralibus tum spiculari- 

 bus nusquam apparentibus. 



At present this distinct and interesting species, named after 

 its discoverer, Professor F. W. Oliver, is only known to occur 

 on the Bouche d'Erquy. Here it is locally plentiful on un- 

 stable sand which is subject to frequent tidal inundations. It 

 grows with S. perennis, to which, unlike all the other annual 

 species, it closely approximates in colour. It may yet be found on 

 the south coast of England. 



11. Salicornia Smithiana, sp. nov. 

 S.procumhens auct., pro parte, non Sm. 

 S. prostrata auct., pro parte, non Pall. 



S. (Smithiana), colore viridi, rubello, vel etiam rubro ; pro- 

 cumbens, minime ascendens, culmo brevi, circiter 15 cm. longo, 

 ramis paucis ascendentibus ; segmentis sterilibus brevibus (circiter 



