16 



ON SPERGULA ARVENSIS. 



Gaudichaud in the Atlas of the plants gathered in the Bonite 

 expedition at tab. 63, under the name of Pironneava ylomerata. 



15*. JEchmea (Pironneava) Meyeri, Safer.— Produced leaves 

 about a dozen in a sessile rosette ; dilated base oblong, 4-5 in. Ion* 

 by about 3 in. broad; lamina lanceolate, a foot and a half lon^ 

 1-1 i in. broad at the middle, narrowed gradually to the point, not 

 so rigid m texture as in its near ally, the commonly-cultivated 

 M. ffhmemta , Hook., plain green on the face, pale and finely 

 striated and thinly lepidote down the back ; the basal prickles close, 

 curved, lanceolate, brown-black, T ' T -£ in. long, the upper ones 

 growing gradually smaller and more distant. Peduncle stifflv 

 erect, above a foot long, with three or four large ascending clasping 

 scanose red-tinted bract-leaves. Panicle dense, erect, oblong* 

 deltoid, six or eight inches long by about half as broad, consisting 

 of about ten globose multifarious heads on short stiff peduncles" 



SL T /? r?^ UOt , m ° re than an inch lon ?' subtended hy 

 leflexed red-tinted lanceolate scariose bracts, like those of the 



Peduncle Heads consisting of 6-12 flowers each, about an inch 



or Zn e \ Wltl0Ut - tl ] B i petal8: flowe ^racts ovate-navicular, 

 coiaceous about an inch bug, with a small brown cusp. Calyx 



SS g 25* Uli in> *W not le P idote ! ovai T nattened^n 

 the side nearest the axis ; sepals lanceolate, rather longer than the 



ovary Wlt h only a small erect non-pungent cusp. Petals not seen! 

 wlTi g C.X^ U treeS near th& SeasW ' aud fre ^-% in ^ 

 feature's rfSL SSV* **¥ 1^\ as one of tlie characteristic 





ON SPERGULA ARVENSIS, Linn., AND ITS 



SEGBEGATES. 

 By George Nicholson. 



struck with a peculiarity?* L 7- H , erl)! >"™, that I was 



fall or definL" ckta hal s „ "r 8 :« g TT ll ' 0al J**** As "° 



m «S EK.rF- ssaw ^ 



cent, vi., t. 701) and' S^i' ,'>' B ° eUn - < Reich - '^ant. Critic.', 

 cent. vi. t. 705) Th^^Tl f ™' i Reidl - '^A. Critic.', 

 hausen in his S fcofcES nn " ^^ aS s l )ccies b ? Boenning- 

 (1824), p. 186- ai d of Z i f + ° r8e Mo, . lasteric »^ Westphalorum ' 

 Uthoi's* ££) Te SwJSL'W? «*W that word in the 



»V ne gives a variety sp! M ro C ;<, P a, which, from the 



