906 FILICBS. (FEiEN FAMILY,) 



O regalis, L. If Royal Fern. .3 to. 6. Stipe grooved; lower 

 mnnge sterile, pinnules oblong, obliquely truncate at base, crenulate; 

 UDPer pinnaj fertile, forming a panicle of linear pinnules, densely 

 covered with fruit dots — May —Moist sliady places; middle Lebanon. 



3. GYMNOGRAMME, Desv. Gymnogkamme. 

 Sporangia in more or less evident sori, at length confluent. _ Frond 

 •lestitute of scales beneath, 1-3-pinnate - Dwarf annuals, with light 

 i.reen foliage, growing on the northera exposure of walls and rocts. 



Fig. 424. 



Fig. 425. 



Tip of frond of Gymno- 

 gramrae leptophylla. ^^^^ ^^. ^^^^^^^ ^^ 



tarach officinatum. 



G. leptophylla, L. .05 to 



.2, glabrous. Stipe at first green, then 

 purplish. Lower fronds short, with 

 fan-shaped segments, upper longer, 

 with obovate-cuneate segments — 

 February to April — Coast region. 

 4. CJETARACH. Willd. 



Cetarach. 

 Sori linear, mixed with scurfy 

 scales, on secondary veins of lower 

 surface of pinnatipartite frond — 

 Dwarf, tufted ferns, growing in clefts 

 of rocks, and chinks of walls. 



C. officinaruMi, Willd. 2f Fronds oblong, spreading; pinnae 

 alternate, round-ovate to oblong, obtuse, entire, glabrous above, eon- 

 fluent — February to May — Common throughout. 



Var. sinuatuni, Post. Pinnse not overlapping, sinuate, crenate- 

 toothed and lobed — Abeih (Lebanon^. 



5. POI.3"POI>llJM, L. Polypody. - ■■ 



Sori round, naked, arranged on the back of 

 the frond in one or more rows on each side of 

 the midrib, or scattered. Stipes jointed on 

 root-stock. 



P. vulgare, L. 21 Ptoot-stock creeping, 

 often above ground, densely covered with rusty 

 scales. Fronds evergreen, .15 to .3 high, pe- 

 tioled, glabrous on both sides, deeply pinnatitid ; 

 pinnae oblong and oblong-linear, acute or obtuse, 

 entire or serrulate —February to July — Shady 

 rocks; common, 

 6. I^OTOCHL.JE]\A, R. Br. Notociil^ka. 



Sori marginal, oblong-orbicular, with nu- 

 merous sporangia, soon confluent, concealed by 

 the long wool or chaff. Stipe continuous with 

 root-stock. 



1. Bi. lanuginosa, Desf. 2f Fronds tufted, .1 to .3 long, 

 with 'very short sti2oes^ oUojig, bipinnate, green, hairy at ui3per sur- 

 face, covered icith tangled wool at lower ; pinnules small, round or ovate, 

 entire, or lowermost pinnatipartite — April — Sea of Galilea ; ISTazaretli ; 

 FezXir near 'Abeih, and northward. 



(a) Tip of frond of Polypo- 

 dium vulgare. (b) A sporan- 

 gium. 30 diameters. 



