122 BRITISH FERNS.— SUB-ORDER II. TRIBE 10 . 
very conspicuously dentate. Totally distinct from Mr. Gillett’s 
tripinnatum, which is a form of decompositum. 
19. venustum, Moore (multilobum, Wollaston). Found in Devon 
by the late Rev. C. Padley. Length, 2 feet. A very handsome 
multilobe. 
20. Willsii, Lowe (conspicuilobum Wills, Wollaston). Found in 
1873, > n Dorset, by the late Mr. J. Wills. 27x10 inches (in centre 
of frond). Lax, the lobes being very conspicuous. 
Group IV. Heteromorphum. 
(Alteration in contour and margin, etc., of ultimate segments.) 
Section a. ROTUNDATUM. (Rounded pinnules.) 
Fig. 36. — Aspfdium angulare, var. rotundatum. Portion of frond. 
1. angustior, Lowe. Raised from spores. Dwarf. 8 Xoi inches. 
2. capitatum, Lowe. A subrotundate form. Raised by myself. 
14X3 inches. A well-branched capitate head, 4 inches long. 
3. conchatum, Moore. Found at Hawkhurst by Mr. Moly. 
Very distinct. Pinnules like shells. 16 X 3! inches. 
*4. cruciatum, Lowe (rotundato-cruciatum, Jones)- A cruciate 
narrow form. Raised by myself from spores. 22Xi| inches. 
Everywhere cruciate ; and pinnae longer at upper part of frond 
than Hankeyi. 
5. diversum, Iwwe. Raised by myself (between rotundatum and 
cruciatum). 12x2^ inches below, where normal ; narrowing above 
to 1 inch, where cruciate. 
* 6 . erectum, Lowe (rotundato-erectum, Jones). Narrow, erect, 
lax, and attenuated. Raised from spores. Pinnules crenate. 
Pinnae confluent near the apex. 24X4! inches. 
7. Gormanstownense, Lowe. Found at Gormanstown, County 
Meath, by Mr. W. H. Phillips. 12x3^ inches. A foliose rotun- 
datum. 
8. Hankeyi, Lowe (rotundato-cruciatum, Monkey). Raised in 
1875 by Mr. W. Barnard Hankey. Cruciate from the base 
upwards. 20x1 inches, [lato-cru datum is not unlike this form, 
