680 315. Riccia. 18. HEPATIC. Pl. cell. fol. 
2. Riccia glauca. Greenish riccio. 
Thallus oblong, forked, lobes blunt, dotted in network. 
Lichen sive Hepatica foliis crassis, ruta muraria# aut chamedryos foliis 
laciniatis quodammodo similis, Rati Syn. 116, 1. 
Riccia glauca, Lin. S. P. 1605; Engl. Bot. 2546. 
On moist sandy heaths; annual. 
3. Riccia minima. Smallest riccio. 
Thallus forked, lobes pointed, very slightly networked. 
Lichen omnium minimus, foliolis scissis, super terram expansis, Dillen 
in Raii Syn. 115, 2. 
Riccia minima, Lin. 8. P. 1605. 
Riccia bifurca, De Cand. Fl. Gall. 1127. 
On inundated sandy places. 
4. Riccia natans. Swimming riccio 
Thallus reverse-heartshape ; beneath ciliated, fibrous. 
-Lichen parvus vernus cordiformis, ima parte fimbriatus, lentis palustris 
modo aque innatans, Dillen in Rati Syn. 116, 2. 
Riccia natans, Lin, Syst. Nat. 2,708; Engl. Bot, 252. 
Floating on pools. . 
6. ovata. Thallus reverse-ovate, rounded at the tip. 
5. Riccia ? spuria. Bastard riccio. 
Thallus membranaceous, lobed, pellucid; fructification 
beneath the sinuses of the lobes, solitary, exserted, top- 
shape, toothed. 
Riccia spuria, Dickson Crypt. A, 20. 
On turf bogs in mountains. 
B. TarcionipeEx. Male....? Fem. Calyx globular, 
pitchershape, 2-valved; capsule nearly sessile, enclosed in 
the calyx, globular, bursting irregularly at the tip; seeds 
and elaters many.—Frondose. 
II. 316. TARGIONIA. Micheli. Targioni. 
Calyx globular, from the under side of the extremities 
of the thallus, closed, becoming 2-valved. 
Targionia hypophy!la. Underlying targioni. 
Thallus dark-green, oblong ovate, beneath scaly, pur- 
plish. . 
Lichenastrum capitulo oroboide, Dillen in Raii Syn. 110, 2. 
Targionia hypophylla, Zin, S. P. 1603; Engl. Bot. 287. 
On heaths and sides of ditches; perennial; March to 
May. : 
