382 BROADHURST: STRUTHIOPTERIS IN NORTH AMERICA 
jugate, 15-17 cm. long, the terminal pinna 11-16 cm. long, 5-7 
mm. wide, heavy, sometimes with a sterile apex 2-5 mm. long, 
the base cordate, petioled (lower 5 mm.), occasionally with spur- 
like protuberances ;* the margins of the pinnae have whitish glands 
marking many of. the vein apices as in S. violacea; sporangia very 
dark brown; indusium narrow, early deciduous, brittle, and very 
irregularly lacerate. [PLATE 29.] 
Type in the U. S. National Herbarium, no. 575810, 575811, 
and in the New York Botanical Garden, collected on moist banks 
on the trail in the vicinity of La Palma, Costa Rica, altitude 
1,450-1,550 m., William R. Maxon 435, May 6-8, 1906. 
The type of S. Christii is from Costa Rica, but S. vivipara is 
evidently a very different plant. The following differences be- 
tween the specimen mentioned under S. Christi (from Christ's 
herbarium) and 5S. vivipara may be noted: S. vivipara is oblong in 
shape and not reduced at the tip, the single specimen of S. Christit 
is ovate-lanceolate and gradually reduced at the tip; in 5. vivipara 
the stipe and rachis are almost scurfy in appearance, owing » 
the fine, amorphous character of the wholly appressed scales; 1 
Christ’s sheet the scales are mainly definite, at least I cm. long, 
and appressed only at their bases, the stipes looking much like 
very scaly S. lineata stipes. The viviparous character may not 
prove constant, but it appears in each of the five fronds seen. 
25. S. Werckleana (Christ) Broadh. comb. nov. 
Lomaria Werckleana Christ, Bull. Boiss. II. 4: 1091. 1904: 
Blechnum Werckleanum C. Chr. Ind. Fil. 161. 1995. 
Plants terrestrial. Rhizome apparently subarboreous, iis 
scales linear, 2.5-3 cm. long, shining, rigid, erect, with a dar : 
center, tobacco brown to umber. Sterile fronds 115-14 cm. eo 
stipest 58 cm. long, but slightly angulate, usually marked to ae 
base with vestigial pinnae, the scales like those of the rhizome 
smaller and soon deciduous; lamina 83-110 cm. long, 15-25 an 
wide, narrowly oblong, the base abruptly reduced (type Ay We ‘ 
“spangled by scales’? which are narrow, fibrillose, 
m . 
: . chis; 
with hoary ones, forming fine, webbed masses on EE - 
seem 
* See footnote under S. violacea, p. 380. fronds seen: 
PORT ie Ser tee ee +} ts of the only complete ge from 
n specimens 
two sterile fronds and one fertile one; they are Wercklé’s ow 
Christ’s herbarium. 
