368 BROADHURST: STRUTHIOPTERIS IN NORTH AMERICA 
tain Peak, altitude 6,500-7,325 ft., Underwood 1446 (Y). Lower 
slopes of Mt. Moses, moist shaded banks among bushes, altitude 
2,000-2,500 ft., Maxon rogg(N). Cinchona, altitude 5,000 ft., 
Clute 71 (Y, N). 
Among these Jamaican plants, as in S. violacea and S. striata, 
there occur small but mature specimens differing mainly in size 
from the larger ones. These smaller plants have narrower laminae 
(3-4 times as long as broad instead of 2~2.5 times), the pinnae are 
closer and smaller (4.5-8 cm. long and 6-12 mm. wide as con- 
trasted with pinnae 13-20 cm. long and 15-18 mm. wide); the 
leaf tissue is much heavier in these smaller forms. As indicated 
above, a similar range occurs in several other species, and it was 
not thought best to subdivide them. In this case, however, the 
rhizome may offer a real distinction. The smaller Underwood 
plant of S. lineata in the New York Botanical Garden conserva- 
tories already referred to in a footnote has an erect rhizome 10 cm. 
high and 4-5 cm. thick. The larger S. lineata plant incompletely 
labeled as from Jamaica, though larger in every other way, has a 
low spreading crown about 7 cm. broad and but slightly raised 
above the soil.* 
Professor L. M. Underwood, who collected a great deal of 5. 
lineata in Jamaica, stated that it is ‘“very variable according t 
soil and light, and especially, age.’ 
The two species, S. lineata and S. striata, have long beet 
confused. The measurements given by Swartz indicate that ™ 
both cases he described small forms. He distinguished between 
them by describing striata (1) as having broader, almost entit® 
and sessile sterile pinnae, in which the whole apex is serrate; and 
(2) as having fertile pinnae with dilated cordate bases. A careful 
study of over thirty sheets from the type localities has shown (1) 
that many of the S. lineata group have fertile pinnae with cordate 
bases; (2) that the lower pinnae of striata are petioled; and (3) 
that the tips are serrate in most of the lineata group, also. Never- 
* Other differences, which correspond to those found in herbarium eee 
are as follows: the smaller plant has stipes 15-17 cm. long, laminae adie a the 
and 13-14 em. wide, close to overlapping pinnae, which are 16-20-jugate, eee less 
terminal pinna 6-7 cm. long; the larger plant has stipes 45-60 cm. long: spuit closé 
blotched with brown, laminae 45-60 cm. long and 20 cm. wide, pee 
25-27-jugate, with a terminal pinna 9-11 cm. long. 
