THE CRESTED BUCKLER FERN. 
THE CRESTED BUCKLER FERN. 
LASTREA CRISTATA. 
L. fronds erect, narrow linear-oblong or oblong-lanceolate, sub- 
bipinnate or bipinnate ; serratures spinose-mucronate ; scales of the 
stipes ovate, pallid, scattered ; indusium without marginal glands. 
—(type): fronds narrow linear-oblong; pinne short triangular ; 
pinnules or segments oblong, nearly always connected at the base, 
crenate-serrate, or obscurely lobed, anterior and posterior ones of the 
lower pinnee nearly equal. [Plate XL. | 
LASTREA CRISTATA, Presl, Tent. Pterid. 77, t. 2, fig. 10. Hooker, Gen. Fil. 
t. 45 A, fig. 4-9. Deakin, Florigr. Brit. iv. 107, fig. 1610. Moore, Handb. 
Brit. Ferns, 3 ed. 117; Id., Ferns of Gt. Brit. Natwre Printed, t. 19. 
Babington, Man. Brit. Bot. 4 ed. 421. Newman, Hist. Brit. Ferns, 2 ed. 
203. Sowerby, Ferns of Gt. Brit. 21, t. 10. 
工 ASTREA CALLIPTERIS, Newman, Hist. Brit. Ferns, 2 ed. 12. 
POLYPODIUM CRISTATUM, Linnaeus, Sp. Plant. 1551; according to the Linnean 
Herbarium. 
POLYPODIUM CALLIPTERIS, Ehrhart, Beitr. zur Naturk. iii. 77. 
ASPIDIUM CRISTATUM, Swartz, Schrad. Journ. Bot. 1800, ii. 87; Id., Syn. Fil. 
52. Smith, Eng. Bot. xxx. t. 2125 (not xxviii. t. 1949, which is Z. Filiz- 
mas); Id., Eng. Fl. 9 ed. iv. 276. Hooker de Arnott, Brit. Fl. 7 ed. 584. 
Bentham, Handb. Brit. Fl. 630. Schkuhr, Krypt. Gew. 39, t. 37. Will- 
denow, Sp. Plant. v. 252. Sprengel, Syst. Veg. iv. 104. Fries, Sum. Veg. 
82. Hooker, Fl. Lond. iv. t. 113. Svensk Bot. t. 890. Fee, Gen. Fil. 991. 
Mettenius, Fil. Hort. Bot. Lips. 93. A. Gray, Man. Bot. North. U. States, 
2ed. 598. Lowe, Nat. Hist. Ferns, vi. t. 20. 
ASPIDIUM CRISTATUM, B. CALLIPTERIS, Pursh, Fl. Amer. Sept. ii. 662. 
AsPIDIUM GOLDIANUM, of some gardens ; not of Hooker and Greville. 
ASPIDIUM LANCASTRIENSE, Sprengel, Anleit. iii. 134. Schkuhr, Krypt. Gew. 
41, t. 44. Willdenow, Sp. Plant. v. 261. Sprengel, Syst. Veg. iv. 104. (A 
variety, B.) 
ACROSTICHUM CALLIPTERIS, Ehrhart ; according to Sadler. 
NEPHRODIUM CRISTATUM, Michaux, Fl. Bor. Amer. ii. 269. 
POLYSTICHUM CRISTATUM, Roth, Fl. Germ. ii. 84. Koch, Synops. 2 ed. 978. 
Ledebowr, Fl. Ross. iv. 515. 
POLYSTICHUM CALLIPTERIS, De Candolle, Fl. Frane. 3 ed. ii. 562. 
DRYOPTERIS CRISTATA, A. Gray, Man. Bot. North. U. States, 1 ed. 631. 
LOPHODIUM CALLIPTERIS, Newman, Phytol. iv. 371; Id., 1851, App. xix. ; Id., 
Hist. Brit. Ferns, 3 ed. 169 (excl. syn. Hoffm.). 
Var. uliginosa: fronds—earlier fertile ones tall, erect, narrow, 
linear-lanceolate, bipinnate below ; the pinnules oblong-acute, mostly 
adnate, inciso-serrate or lobed, with aristate incurved teeth; barren 
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