— / 



Ory«P<t'>*ï'* ?»larlliae. r. A, v. f*. 



Lastraea.—Rhizom-à brève. Stipites conferti. Frondes ovatae, 

 pinnatae. Finiiae coriaceae, erecto-patentes vel plus minus patentes, 

 profunde pinnatifldae, sessiles, superiores adnatae, maximaeoblongo- 

 lanceolatae, obtusae, intimae interdum deflexae. Segmenta erecto- 

 patentia, obtusiuscula vel subacuta, integerrima vel subci-enata; 

 segmentum infimum anterius elongatura, patens, rectum; segmen- 

 tum infimum posteiius abbreviatum, sigmoideum (i.e. prope basin 

 introflexum et parte superiore retlexum). Costae utrinque pubes- 

 centes, pubescentia supra persistens, subtus decidua; costulae 

 pinnatae, venis simplicibus, utrinque decidue pilosis. Sori mediani 

 vel subcostulares, utrinque 1 — 4, indusiis reniformibus, coriaceis. — 

 Rachis decidue pilosa, supra sulcata, pilis in sulcis persistentibus. 



Rhizome erect or oblique. Stipes ca 5 — 15 cm. long, brown, 

 hardly scaly and nearly blackish at the base, g-rooved, pubescent, 

 the hairs pale, caducous, but those on the upper (inner) side 

 persistent. Fronds 10 — 15 cm. long, 4—6 cm. broad. Pinnae 

 10—12 pair below the pinnatifid apex, the higher cuneate at the 

 base, the lowest as long as the following or somewhat shorter, 

 the largest 21/9-3 cm. long, ca 6-7 mm. broad at the middle, 

 unequal-sided at the base. Lobes ca 6 on each side, oblong, 

 ca 11/2 mm. broad, somewhat re volute at the edge, the lowest 

 anterior rather parallel to the rachis, elongated, straight, the 

 lowest posterior abbreviated, S-shaped (incurved at the base, recurv- 

 ed at the apex) but not in the higher, adnate pinnae. Texture 

 coriaceous; colour black-brown when dry; veins 3 — 5 on a side, 

 simple, hairy on both sides, the hairs on the upper side more 

 deciduous, those on the lower side more persistent. Sori mode- 

 rately large, occupying the 1 — 4 lower veins. —The species bears 

 the name of Mrs. M. Backer. 



Java (Mount Slamat, C. A. Backer No. 262). 



Or>o|ilerî)ii he!*nkieii!^i!*. r. A, r. Mi, 



Lastraea.— Frondes ovato-lanceolatae, 2-pinnatifidae. Pinnae 

 patentes vel horizontales, lineari-lanceolatae, sessiles, valde pro- 

 funde pinnatifldae. Lobi oblongi vel lineari-oblongi, obtusi, margini- 

 bus parallelis, leviter recurvatis, tenuiter ciliatis, herbacei vel 

 submembranacei, supra in costulis venisque pilosi, subtus dense 

 sed minute pilulosi vel glandulosi; costulae pinnatae, venis sim- 



