SUB-SECTION POLYSTICHUM. 
II 7 
Nature-Printed British Ferns,” by Thomas Moore.) In the 
original plant the pinnae were twisted so as to lie one above the 
other like stairs. It is not so decidedly tripinnate as Gillettii , and 
altogether a different-looking plant. Found also in the English 
Lake district. 
Section / 3 . ACUTILOBUM. 
(Pinnules acute-lobed, upper and lower ones of equal length.) 
1. acutilobum, Wollaston. Raised from spores by Mr. Wollas- 
ton in 1873. 34X3 inches ; in middle of frond, only 2 inches. 
2. acutissimum, Wollaston. 
3. acutum, Lowe (acutilobum acutum Wills, /ones). Crowded 
with bulbils along the rachis. 
4. Allchini, Lowe (proliferum Allchin, Jones). Also copiously 
bulbiferous. 
*5. arctissimum {Lowe). A very narrow form, raised at Highfield 
House. Apex attenuate. 
*6. conspicuum, Lowe (proliferum-conspicuum, Lowe). Raised 
from spores. Very lax in every part of the frond. 25 X 13 inches. 
Narrowing from the base. The superior basal lobe at right angles 
to the pinnule. 
7. cruciatum, Lowe (acutilobum cruciatum, Jones). An interest- 
ing form. 24 X 2^ inches. 
8. exile, Lowe (acutilobum exile, Phillips). Found at Holywood 
by Mr. W. H. Phillips. 12X3^ inches. A pretty form. Mr. 
Phillips has found other sub-forms. 
9. Footii, Lowe (proliferum YootW, Jones). Found in Co. Clare 
by Mr. F. J. Foot. Length, 2 feet. Segments more crowded than 
in proliferum. 
*10. Fraseri, Lowe (proliferum Fraseri, Lowe). Raised from 
spores at Highfield House. A narrow acutilobe variety. The pinnae 
and pinnules very lax. 18 X 5 inches. 
11. grandiceps, Lozve (acutilobum grandiceps, Wollaston). 
Raised in 1874 by Mr. G. B. Wollaston. Narrow, branching, 
and crested. 18x2^ inches. 
12. Grayi, Lowe (gracile Grayi, Gray). Found in 1865, in South 
Devon, by Mr. R. J. Gray. 27x65 inches. Very slender and acute- 
lobed. A narrower form was found in i860, in Hampshire, by Mr. 
T. B. Rake, which is more divisolobe. Length, 2 feet. 
13. Hankeyi, Lowe (acutilobum Hankey, Jones). A fine form, 
not proliferous. 
14. Hartleyae, Lozve (acutilobum Hartley, Wollaston). Found 
in 1863, on Furness Fell, by Mrs. Hartley. A beautiful variety, 
erect in habit and acute in all its parts. 
15. laciniare, Lozve. Found at Coombpyne, Devon, by Mr. 
Moly. A lovely lace-like form. 24 x6| inches. 
16. Masoni, Lowe (proliferum Masoni, Barnes). Found in 
1868, at Humphrey Head, by Mr. A. Mason. A finely-cut, bulb- 
bearing variety. 
