GRIMMIACEAE. 181 
in the taxonomy. ‘ This difficulty has led to a complication in connection 
. materially, both by omission and addition, from that given in the Handbook 
of the New Zealand Flora 
Fruit is needed in good condition to determine most of the species with 
any degree of accuracy—the calyptra (hairy or naked), the peristome 
(present or absent), and the form and surface of the capsule, and length of 
seta, affording test characters. Most of the New Zealand species belong to 
the section Goniostoma of the subgenus Hu-macromitrium, in which the 
capsule, while smooth below, is finely plicate and plaited just at and below 
the orifice (old capsules are often plaited throughout). 
The arrangement and direction of the leaves when dry is a character of 
great importance though (as I have pointed out in an article in Bull. Torr. 
Bot. Club, 42, pp. 97-98) it may be modified in some species according to 
the conditions under which the plant has grow 
The key a I think, be found helpful, bat too much reliance must not 
be placed oni 
: ’ Key To THE NEw ZEALAND SPECIES. 
a Leaves ending in a yong aged arista, lost in all but the we nieracit 
grin : 2 
Leaves not pilifero we a 3 
9. J Leaves nig acolo round the stem when dry Be .. caducipilum. 
=o s spirally twisted on their own axis when dry .» retusum. 
3 weaves é strata and more or less erect when aes not twisted 
* |. Leaves more or less twisted when dry a 6 ‘ 
4 f Robust plants with large leaves ; calyptra orthophyllum. 
3 Plant very slender; leaves about 1 mm “ong ; vealypti hairy - 
5, J Leaves erecto-patent when aI eucalyptorum. 
"| Leaves subsquarrose when moi recurvulum. 
( Robust plants ; capsule more or ogee fusiform, plicate throughout ; 
4 calyptra glabro rous 7 
bea ustsve — subeylindsic to ovate, smooth (until old), Plicate 4 at : 
. F Seta she sung ak: leaves narrowly a acuminate longirostre. 
Seta about 1 cm., thin; leaves more or cicion unduls Hectori. 
{ Leaves ligulate or subulate =~ a wider b ieee elongate 
| (1-2cm.), straight; leaves when ane mewhat regularly 
8.4 spirally arranged and vino strongly eirebea pene a .- gracile. 
— wider, acute or “ ee gs 9 
s acute ; calypti 10 
9. pniee obtuse or stan shortly acute .. il 
Se Rape -bro branches long, leaves closely 
enrolled potas dry : . elongate (to 2-5 cm.) longipes 
10. < Slender, mae ha olive green ; lem.; leaves very 
; spirally arra when a aba . 
late-lanceolate, acute ; seta 1-1-5 em. eymouthit 
Calle & arp usually obscure with numerous low papillae s 
11.< Cells large, 9-l4y, oN: distinct, aca high central 1 mamilla 
pilla : 
12. %, lyptra : Bis Bas et Oe Pa ligulare. 
Calyptra seatialy hairy a . “- -* -+ pror a Fa 
Calyptra hairy .-- a ae a. ce a: 
13.4 Calyptra naked pusillum 
14, J Peristome 0 ‘ ‘ : 15 
; me present .. -- 16 
15 Branches very short, rarely . em. ; leaves crisped when ‘dry -.  grossirete. 
*‘) Branches elongate: leaves closely s spirally twisted when dry -.  rigescens. 
ranches short ; leaves crisped when erosulum. 
16. Branches elongate ; appressed, only slightly twisted when 
