48. POLYPODIUM, DICTYOPTERIS. - 317 



rachis and veins beneath pubescent ; main veins 2 lin. apart ; veinlets raised, G-7 

 on a side ; sori small, medial. Hk. Sp. 5. p. 8. 



Hab. Island of St. Thomas, W. Africa, Mann. 



77. P. (Goniopt.) stegnogrammoides, Baker ; caud. subarborescent ; st. 1^-2 ft, I., 

 firm, erect, pubescent upwards ; fr. 2-3 ft. L, 1 ft. or more br.*> pinnae 6-9 in. L, 

 \\ in. br., the apex acuminate, the edge bluntly lobed about a quarter of the way 

 down ; texture subcoriaceous ; rachis and veins beneath a little hairy ; veinlets 

 prominent, 8-9 on a side ; sori in rows near the midrib. P. sandvicense, Hk. 

 Sp. 5. p. 5. (not Sp. 4. p. 267). Stegnogramma, Brack. 



Hab. Sandwich Isles. 



78. P. (Goniopt.) pennigerum, Forst. ; st. tufted, 6-12 in. ]., glabrous, slightly 

 scaly ; fr. l|-2 ft. 1., 8-12 in. br. ; pinnae 4-6 in. 1., f-1 in. br., cut about 

 halfway down into blunt, falcate, slightly crenated lobes about 2 lin. br. ; lower 

 pinnae gradually reduced ; texture firm-herbaceous ; rachis and both sides 

 naked ; veinlets 6-8 on a side ; sori in rows near the midrib. Hk. Sp. 5. p. 7. 

 G. Forsteri, Moore. 



Hab. New Zealand. Very near P. tetragonum, from which it differs principally by 

 the lower pinnae being gradually reduced. 



79. P. (Goniopt.) unitum, Hk. ; st. 1-1 ft. 1., slender, naked ; fr. 2-3 ft. L, 

 1 ft. br. ; pinnce 4-6 in. 1., - in. br., the apex acuminate, the edge bluntly 

 lobed about a quarter of the way down, the base truncate ; texture firm- 

 herbaceous ; rachis and both sides 'naked; veinlets 5-6 on a side; sori close to 

 the main veins. Hk. Sp. 5. p. 5. 



Hab. Natal, Cameroon Mountains. Barely, if at all, distinguishable from some of 

 the forms of P. tetragonum. 



80. P. (Goniopt.) tetragonum, Sw. ; st. erect, 1-2 ft. 1., naked or slightly 

 villose ; fr. 1-3 ft. ]., 1 ft. or more br. ; pinnce numerous, spreading, 6-8 in. 1., 

 ^-1 in. br., the lowest narrowed at the base and sometimes stalked, cut from a 

 quarter to halfway down into blunt lobes ; texture thinly herbaceous ; rachis 

 and under side naked or slightly hairy ; veinlets 6-10 on a side ; sori in rows 

 near the midrib. /?, P. megalodus, Schk. ; pinnce l\ in. br., lobes ^ in. br., sub- 

 falcate ; veinlets 12-15 on a side. Hk. Sp. 5. p. 3. 



Hab. Cuba and Panama, southward to Brazil and Peru. Judging from the figures 

 quoted, this is P. androgynum of Poiret ; and if so, that name has priority. It varies 

 greatly in the breadth of the pinnae and depth of the lobes. A full account of the forma 

 will be found in Fde's Ferns of the Antilles ; and our a apparently includes his tenera, 

 leptodadia, pyramidata, Fdei, tetragona (five varieties), quadrangularis, guadalupcnsis, 

 and hastata. Our /3 is placed by Mettenius in his latest publication in Aspidium. 



Dictyopteris, Presl. Venation of Sagenia, i.e., veins anastomosing 

 copiously. TAB. 48. f. o. Sp. 81-90. 



* Sori liserial. Sp. 81-86. 



81. P. (Dicty.) Barberi, Hk. ; st. tufted, 6-12 in. 1., slightly scaly at the 

 base ; fr. palmately 5-lobed or more usually pinnate, with a large terminal 

 segment and 1-4 pairs of pinnas, the upper ones oblong-lanceolate, 4-6 in. L, 

 1 in. br., nearly entire, the lowest pair with a deep lanceolate lobe at tbe base on 

 the lower side ; texture subcoriaceous ; both sides naked ; areolce rather large and 

 regular, with copious free veinlets ; sori copious, principally in two rows near 

 the main veins. Hk. Sp. 5. p. 100. 



Hab. Malay Peninsula and Isles. 



