110 



DESCRIPTION OF 



Atiatomia. Radices cellulosge, fasciculo vasorum unico centrali fibris 

 circumato, Rliizoma e maxima parte cellulosum ; celiulse rotundatse, pressioiie 

 angulate, plurimse, parvae, succo rubro-rosaceo turgidse ; lacunae paucse 

 intei'jetctae sine ordine evidente. Fasciculi vasorum plores, sparsi, peri- 

 plieria fibrosi, centre ductiferi ; ductibus plurimis, vix solubilibus, simpli- 

 citer trabeculatis. Stipes etiam e maxima parte cellulosus ; cellulse laxae, 

 pressione angulatse, minoribus succo rubro-rosaceo efFoetis paucis et prteci- 

 pue periplieriam versus sitis ; lacunae plures, sparsae. Fasciculi vasorum 

 subnoni, versus basin stipitis irregulariter, versus apicem hujus circa cen- 

 trum dispositi, sectione transversa oblongi vel subreniformes. Dispositio 

 fibraram ac vasorum eadem ac in rhizomate, sed vasa majora, ductusque 

 solubiles, pseudo-fissi, compositi. Folioiorum cuticula utraque et praeser- 

 tim inferior, quae stomatosa, crassiuscula, e cellulis sinuosis globulas paucas 

 virides minutas continentibus formata. Stomata (vel potius perforationes) 

 maxima, sine ordine sparsa, in areolis minutis solitaria, in mediocribus plura, 

 rotundata, inaequalia, supra cuticulam elevata, oculis nudis facile conspicien- 

 da ; oris raargine e cellulis linearibus 3 — 4-seriatis annulatim dispositis 

 formato, membranula marginali simplici ? late crenata. Referunt omni 

 sensu Hepaticarum quarundam stomata. Parenchymatis cellulae ut plurimum 

 rotundatae, meatibus conspicuis interceptae ; cellulis cuticulae stomatosae 

 propinquis laxissimis, quam maxime difformibus et lacunis amplis intercep- 

 tis. Loculorum parietes proprii tenues, membranacei, moleculis minimis 

 crebris interspersi. 



Obs. For the knowledge of this plant being a Kaulfussia, I am indebt- 

 ed to my kind friend Dr. Wallich. In my MSS. I had called its Macrostoma 

 in allusion to its stomata, which so far as I know have hitherto been 

 found only in the cuticulate genera of Hepaticae ; these organs M. Kaul- 

 Fuss describes by the words " vesiculis pertusis." I have described the 

 capsule with reference to its appearance only : but it is at once obvious 

 that the fructification consists of as many capsules as there are cells, united 

 together by cellular tissue, which is deficient along their inner faces, but 

 in this species only from their middle upwards. 



