26 



C. Christensen: Drvopteris species et varietates novae. 



3. var. portoricensis (Kuhn) C. Chr. Smiths. Misc. Coll. 52, 380. — 

 Like var. Balbisii, but rather hairy throughout, especially on rachis, ribs 

 and upperside, scarcely glandular beneath. Sori indusiate; indusium 

 subpersistent, ciliate, and with a few glands. 



M. Puer tes no. 1085. 



4. var. terminalis (Kuhn) C. Chr. nov. var. — {Aspidium terminale Kuhn, 

 in sched.). In general habit, texture and cutting fully like var. Balbisii, 

 but still larger, nearly tripinnatifid, differing from the two former varieties 

 by its non-attenuate lamina, i. e. it lacks the dwindling pinnae below, the 

 lowermost pair of pinnae being not much shorter than the following ones. 

 Rachis, costae and costulae beneath very short-hairy, surfaces otherwise 

 glabrous and eglandulose. Veins in larger pinnules about 8-jugate, often 

 forked, remarkably thick, bearing the exindusiate sori near the apex in 

 the teeth of the segment (or pinnulae), nearly exactly as shown in my 

 figure of V. Balbisii (1. c). In this respect it resembles somewhat D. 

 limbata (Sw.) 0. Ktze., to which species Kuhn unrightly referred it. — 

 Stipe 15 cm, lamina 35 cm long, largest pinnae 7 cm long by 2 cm broad. 

 May be a distinct species. 



Eggers no. 2775. 



Obs. The presence of a distinct indusium in D. sancta var. portoricensis 

 makes it doubtful whether the form from the Lesser Antilles referred by 

 me to D. consanguinea (Fee) C. Chr. (Vid. Selsk. Skr. VII, 4, 297) can be 

 safely distinguished as a species from D. sancta. I have some doubt 

 what the true Aspidium consanguineum may be. The pinnae and segments 

 figured by me (1. c. fig. 21) is nearly certainly a small form of D. lim- 

 bata (Sw.) 0. Ktze. But there occurs in some of the islands, especially 

 Martinique, Dominica and Guadeloupe, and also Porto Rico 

 (Sin ten is 1753) a smaller form, which perhaps is the true D. consan- 

 guinea. This form is as to important characters, size, glandular under- 

 side, unequal-sided pinnae, scarcely to distinguish from the typical D. 

 sancta, and it is by nearly all authors referred to that species. Still it 

 differs materially by its distinct, persistent glabrous or slightly ciliated 

 indusia, and further it differs by the shape of the segments, which are 

 attenuated towards the apex, sometimes nearly triangular, not as those 

 of D. sancta linear. Thus it recedes from D. sancta in the direction of 

 Z>. opposiia. 



