BENEDICT: GENERA OF THE FERN TRIBE VITTARIEAE 189 
Fic. 4, 5. Paraphyses of the M. graminea type, much enlarg 
Fic. 6-8. M. subfalcata; after Hooker, Sp. Fil. 5: . pl. sibs 1864, show- 
ing venation; 6, section of leaf; 7, habit of plant; 8, Bet la as in M. dareicarpa. 
. trichoidea; illustrating same features as preceding species; 
enlargements the same; 9, E. B. Copeland 1723, Mindanao; 10, 11, R. S.Williams 2230. 
Fic. 12-15. M. paradoxa; showing venation (12 and 13) and leaf sections (14 
and 15), the sections having been taken at apa the positions indicated on FIG. 13; 
12, R. S. Williams sath Luzon; 13-15, Bolles, Samoa. 
Fic. 16-18. Paraphyses Ge and 18) zat spore (17) of M. paradoxa. 
Fic 20. M. Seinés: showing venation and leaf section; enlargement as 
in wiciiar beak atlas 
PLATE 4. Hecistopteris 
Fic. 1-22. Showing leaf outlines, venation, and arrangement of sporangia (7 
and 17); sporangia present but not indicated on most of the other leaves; enlarge- 
ment in all cases X 2. 1-8, R.S. Williams 1150, Bolivia; 9-12, Jenman, Kara Kara 
Creek, British Guiana; 13-15, Jenman, Essequibo oe British Guiana; 16-18, 
Jenman, Trinidad; 19-22, R. S. Williams 1172, Boliv 
PLATE 5. Vittaria 
Fic. 1-6. V. intramarginalis; Underwood & Earle 875, Cuba; 1, leaf, showing 
venation, 2; 2—5, cross-sections of petiole showing double leaf trace at base (2, 3) 
and its fusion to form single midvein (4, 5); 6, cross-section Ms lamina at about the 
middle to show sporangial grooves; all sections aye 12 
Fic. 7, 8. V. scolopendrina; 7, E. D. Merrill 5861, eaten 8, Bolster 308 , 
Mindanao; 7, portion of leaf, X 2, LL venation; 8, cross-section from midvein 
to margin, X12, showing sporangial groo 
Fic. 9, 10. V. ‘elongata’; pauuad 131, Mindanao; tes cross-section of leaf, 
12, showing sporangial groove; 10, portion of leaf, X2, showing venati 
Fic. 11-17. V. remota; R. S. Williams io: Panama; 11, portion e3 ae Ka 
showing venation; 12, cross-section of leaf blade, X12, showing very slight sporangial 
groove; 13-17, cross-sections of petiole from base to beginning of blade, X12, showing 
a single leaf trace 
Fic. 18-21. V. sikkimensis, A. Henry Sate Szemao, China; arg leaves, 
= oe showing venation like that of large Monogramma paradoxa (PLATE 2); 21, 
cross-sec aection of leaf X12, showing two separate famernee grooves ek ae 
of Vitiari 
PLATE 6. Polytaenium and. Antrophyum 
Fic. 1. Polytaenium cayennense; Fendler 151, Trinidad; leaf slightly reduced 
in size, showing twin net type of reticulate venation 
Fic. 2. Antrophyum plantagineum; R. S. Williams 2444, Mindanao; leat 
slightly reduced in size, showing single net type of reticulate venation. 
PLATE 7. Polytaenium and Antrophyum. 
G 2. Antrophyum stenophyllum; A. Henry 09607, Szemao, China (type 
number, aa time illustrated); 1, whole plant, X14, showing arrangement of spor- 
angia; 2, leaf, 14, showing v oouatibe 
Fic. 3-5. Polylaenium Lastedinin var. Feei; Mexico; 3, H. Fink bells 4and 5, 
F. Miiller; leaves <4, showing venation and arrangement of sporangi 
