JUNGERMANNIA COMFLANATA, FLAT JuNGER- 



MANNIA, 



JUNGERMANNIA. Lin. Gen. PL Cryptogamia Algje. 



Masc. pedunculatus, nudus. Anthera quadrivalvis. 

 Fjem. feffilis, nudus, feminibus fubrotundis. 



Rail Syn. Gen. 18. Musci. 



JUNGERMANNIA complanaia furculis repentibus, foliolis inferne auriculatis, duplicatoimbricatis, 

 ramis aequalibus. Lin. Syji. Vegetab. p. 803. Sp. PL p. 1599. Fl. Suec. 1041. 

 Weis. Cryptog. p. 1 24. 



JUNGERMANNIA foliis rotundis alterne imbricatis, caule piano multifloro, fetis breviffimis. Halkr 

 Hjft.n. i860. 



JUNGERMANNIA complanata : furculo reptante, foliis fubrotundis ferie duplici ordinatis, fubtus 

 appendiculatis ; vaginis ramorum plano-truncatis. Necker. Meth. Mufc. p. 142. 



LICHENASTRUM imbricatum majus fquamis compreffis et planis. Dillen. Mufc. 496. t. J2.f. 26. 



JUNGERMANNIA foliis eircinatis imbricatim difpofitis ex viridi flavefcentibus. Michel. Gen. y. t. $.f.zi. 



LICHENASTRUM imbricatum majus. Raii Svn. in. Hud/on, FLAngl. p. 514. Lightfoot Fl.' Scot. 

 p. 781. 



Defcriptio ex W E I S. | Defcrlption from WEIS, 



r 



SURCULIS variae longitudinis, ab unciali ad biuncialem i SURCULI of various lengths, from one to two inches 

 longitudinem, planis, inordinate ramofis, ad| flat, irregularly branched, creeping on the 



cortices arborum, latis caefpitibus repit. t bark of the trees in large patches. 



FOLIOLA denfe imbricata, alterna, rotunda, fubpellu- | LEAVES of a pale yellow-green colour, clofely imbri- 

 cida, plana, furculi nervum fuperne tegunt ; $ cated, alternate, round, fomewhat tranfparent, 



inferne nervo adherent parvae, rotundae fqua- | . flat, above entirely covering the mid-rib of the 



mulae. Color pallide e luteo viridis. Recens s^ furculus, beneath fmall round fcales adhere to 



mollis tadtu eft, aqua madida tota flaccefcit. | the mid-rib, the whole plant, when frefh, is 



Ad extremitates, et paflim ad exortum ramo- 1 foft to the touch, moiftened with water it 



lorum prodeunt ihecce planae, fquamis duploj grows flaccid. At the extremities, and here 



vel triplo longiores, dilute virides, truncatae, f and there at the origin of the branches, pro- 



e quibus^/d? breves, linearn non excedentesf ceed flat Jheaths appearing truncated or cut off 



ernergunf, tenuiffimss, cum parvis nigris capi- | at top, from whence proceed fhort fetse or pe- 



tulis, in fufcas lacinulas pilofas diffilientes. | duncles about a line in length, very {lender, 



I and terminated by fmall black heads fplitting 



y into four brown hairy fegments. 



t 



Fig. 1. Plafita magn. fiat, | Fig. 1. The plant of its natural fize. 



Fig, 2. Pars ejufdem lente audta. t Fig. 2. A part of the fame magnified. 



Fig. 3. Pars ejufdem inferior. zFig. 3. The underlide of the fame. 



Fig. 4. Theca feu Vagina. %Fig, 4. The Cafe or Sheath. 



Fig. 5. Pedunculus. \ F ^- 5' The Peduncle. 



Fig. 6. Capitulum adhuc integrum. y Fig. 0. The Capituium as yet entire. 



Fig. 7, Capitulum findens pulveremque fpargens. tFig. 7. The Capitulum fplitting and difcharging its 



I powder. 



Fig. 8. Capitulum demiffo pulvere. t Fig. 8. The Capitulum with the powder difcharged. 



The name of Jungermannia was given to this genus by Micheli in honour of Jungermannus, a botanift 

 of the laft century. 



the 

 on ; 

 ric Characlcr. 



With all due deference to fuch refpeclable authority, we are of opinion, that the character of this genus would 

 be leis complex, and equally complete, without calling in thole balls or iphaerophylii, as Necker terms them, 



at all. 



The Capitu'Ia, or little heads, fplitting when ripe into four parts, replete with a fine powder (whether pollen or 

 feed is immaterial) attached to numerous hairs growing to the iniide of the Capitula, are characters which will in 

 all cales fufficiently ciiftmguiih this genus, The little heads of thefe plants are capable of affording much micro- 

 fcopic entertainment. Take a head ready to burft open, place it before the microfcope, affift its opening with the 

 point of a needle, and the elaftic hairs on the infide will inftantly appear in motion, and throw off the globules 

 attached to them , in great numbers, and with confiderable foi , 



The preient fpecies is one of the raoft common of this genus, and may be found in great plenty and perfection 

 about the end of January, fpre'ading on the bark of the Oak and other trees in woods, particularly Charlton Wood. 



It is diftinguiihable from another, equally common, by the pjifc ^ctn colour of its leaves. 



