290 PLANTARUM IN MARI I\U15R0, ETC. 



LV. UnOTF.v (Lamour.). Killz. sp. alg.. p. 502. ^ 



138. Udoloa argeiilea. nov. sp. Tab. XII, fuj. I. 



U. vix slipilala, froiule tenui subrcnirormi-llabellala longiludinalitcr slriato- 

 plicata, obsolete zoiiata, mari;Ine snperiore crosa (>t prolifera, crusta cab:are3 

 candidisslma obducla. 



Hab. Suez in sabulosis profundioribus. — Portier ! ■>■- .-^ ' -i 



Stipes brevissimus basl bulboso-stupposus mox in frondem singulam cxpla- 

 natus, vol in lacinias plurimas irregulariter divisiis. Frondes, licet cake carbo- 

 nica incruslatae, teniiissimae, flabolii ad inslar dilatalac, longitudinaliter striatae 

 et plicatae, zonis parum conspicuis notalae, margine snperiore erosae, novas 

 proles conformes cmittentes. Substantia nicinbranacea, exsiccatione fragilis. Co- 

 lor pallide viridi-cinerascens. 



Ab XJ.JlaheUata Lamour, cujns specimina ad Floridam Key IVestX^imX^ 

 et ab Ashmeadio missa coram oculis liabeo, cei'le distincta. Species nostra ab 

 ilia distat fronde multo lenuiori, sulcato-slriata, stipite brevissimo, margine fron- 

 dls eroso, zonisque vix conspicuis. Sub mlcroscopio notae differenliales magis 

 eminent. In IJ. flabellota fila frondem constituenlia in eodem piano nnmerosa 

 superimposita valde ramosa, stratum corlicale compaclum materie colorata 

 farctum ; in nostra fila pauciora et simpliciora in eodem piano simplici serie 

 disponuntur parallellter excurrentia strato cortlcali hyalino laxe religata. 



LVI. ClII.OROPLEGMA, /?0t'. gcn. 



Frons stipitata sursum in mcmbranam flubelliformem ecorticatam concen- 

 trice zonatam dilatata, substantia calcarea pulvereo-ocbracea leviter suiTusa, ex 

 fills numeroslssimis pluria strata efformantibus denslssime implicatis decussatim 

 interjectis consliluta. Fila parum pellucida bumore colorato fusco-succineo re- 

 plela, granulis amylacels lutescentibus praedlta, varie ramosa, flexuosa et glb- 

 bosa parielibus rigldiuscidis Inslructa, inter se se libera, nullo scilicet epider- 



