195 247 



246. Dryopteris glochidiata (Meft.) C. Chr. n. sp. — Fig. 40 a. 



Syn. Aspidium glochidiatum Mett. msc. 



Type from Southern Brazil, leg. Sellow (B!). 



Species D. nephrodioidi (Kl.) habitu, magnitudine proxime affinis, differt: la- 

 mina subtus pilis minutis erectis glochidiformibus ubique piaedita, supra pilis 

 maxime simplicibus brevissimis pubescente; soris subcostularibus, sporangiis setis 

 glochidiformibus instructis. 



It is possible that this proposed new species is a form of the common Bra- 

 zilian I), higubris, which it resembles as well as 

 D. nephrodioides in habit, size and venation. Still 

 it lacks the scales of rachis and costæ beneath, 

 which are found in D. lugubris, the sori are di- 

 stinctly inframedial, and the sporangia are setose 

 by anchor-shaped hairs similar to tliose, occurring 

 on the under surface. Rhizome short-creeping; stipe pjg ^q« segments of a. D.^lochidiata 

 4— 4'/a dem long, quadrangular. Rachis and costæ n. sp., with anchor-hairs from the sur- 

 beneath densely stellato-pulverulent. Pinnae 10—11 face, and 6. D. ancgriothrix Ros. x Vh.. 

 cm long, IV2 — 1^/* cm broad. Veins 10 each side, the two lower ones connivent 

 to sinus. 



247. Dryopteris ancyriothrix Ros. in Fedde, Repert. 7: 305. 1909. — Fig. 40 b. 



Type from Ecuador: in monte Guayapurima, Spruce nr. 4748 (RB!). 



A peculiar, thin-leaved species, resembling D. glochidiata by the anchor-shaped, 

 erect hairs of the underside and rachis but otherwise very different by the longer 

 pinnæ, the glabrous upperside and sporangia, exindusiate medial sori, the basal 

 veins united etc. The rachis is not densely pulverulent as in I), nephrodioides and 

 related species, still the species has its proper place here. 



249. Dryopteris nephrodioides (Kl.) Hieron. Hedwigia46: 327. 1907 (excl. var.). 



Syn. Aspidium nephrodioides Klotzsch, Linnaea 30: 370. 1847. 



Type from Venezuela, Caripe, in sylvis humidls, Moritz nr. 206 (Bl). 



A variable species but easily distinguished from almost all other species by 

 the dense pubescence of stellate hairs throughout the whole plant; the hairs of the 

 rachis bear on a short stalk 5-6 short, normally simple branches, those of the 

 surfaces are sessile and bear 3 — 5 long horizontal branches, which are adpressed 

 to the leaf tissue: generally these hairs can only be seen by aid of the microscope; 

 in certain forms rachis upviards, costæ and veins above and the margins are fur- 

 nished with some few, deciduous, long, simple setæ. 



The oblique rhizome bears at the top several leaves on long stalks; the 

 leaves have a pinnatifid apex and a large number of alternate short-stalked linear 

 pinnæ, which are long acuminated, a little reduced towards the base and incised 



32* 



