428 ACOTYLEDONES — LICHENES. 



reviving' by the application of moisture after being dry; bear- 

 ing leaves which are very rarely indeed divided, often nerved, 

 entire or toothed and serrated at the margin. — 



Sect. I. Seta or Fniitstalk terminal. ACROCARPI. 



Subsect. I. Lid adhering to the moitth of the capsule, tchiJi 

 is destitute of jjerislome. ASTOMI. — Andr/EA. Phas- 

 CUM, &c. vol. ii. p. 2.* 



Subsect. II. Lid deciduous; mouth of the capsule naked. 



GYMNOSTOiMI Sphagnum. Gymnostomum, &c., 



vol. ii. 7>. 2.* 



Subsect. III. Lid deciduous ; mouth of the capsule furnished 

 ivith a peristome. PERISTOMI. 



Div. I. Peristome simjile. A PLOPERISTOMI 



Tetraphis. Splaghnum. Encalypta. WnissiA. 

 Grimmia. Dicranum. Polytrichum, &c., vol. ii. 

 p. 2.* ^ 



Div. II. Peristome double. DIPLOPERISTOMI— 



Funaria. Orthotrihcum. Bryum. Dartramia. 



BuXBATMIA, vol. W. p. 3.* 



Sect. II. Seta or Fruit-stalk lateral. PLEUROCARPI. 



Subsect. I. 3Iouth of the Capsule naked. GYMNOSTO- 

 MI. — Hedwigia, vol. ii. p. 4.* 



Subsect. II. Mouth of the Capsule furnished with a Peri- 

 stome. PERISTOMI. 



Div. I. Peristome single. A PLOPERISTOMI 



Pterogonium. Leucodon, &c., vol. \\. 2J. 4.* 



Div. II, Peristome double. DIPLOPERISTOMI. 

 — Daltonia. Fontinalis. Neckera. Hookeria. 

 Hypndm, &c., voL'n.p. 4.* 



Ord. CII. HEPATIC^. Fructification mo%i\Y oi '2 ICmAs ; 

 consisting of very minute, rounded, reticulated bodies, often 

 called anthers ; and capsules, in an early stage covered with a 

 calyptra and surrounded by a perianth, at length bursting the 

 calyptra irregularly and (usually) opening from the extremity 

 into 2 or more equal valves, without an opercxdum, I-celled, 

 containing numerous seeds and spirally twisted filaments. — Mi- 

 nute plants, frondose or foliose ; mostly loosely cellular, reviv- 

 ing, when dried, by the application of moisture. — In this Order 

 we have the extensive genus Jungermannia and the highly 

 curious one, Marchantia, &c., vol. i\. p. 98. 



Ord. cm. LICHENES. Thallus {or frond) ^o\ynwr\^\\om, 

 without root, perennial, abounding in excessively minute bodies 

 for the purpose of propagation, either imbedded in the substance 



i 



