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Gen. X IV . P T E R O S TY L IS , B r .
Perianthium ringens, membranaceum. Sepalum superius cum p e ta lis in galeam cohærens ; latérales
basi connata. la b eUum unguiculatum, subinclusum, basi gibbosum v. appencliculatum. Columna basi
cum galea adnata, apice alata, medio stigmatifera. Anthera terminalis, persistens. P o llin ia 4 , compressa.
Herbæ tuherosoe, terrestres, folia te s ; floribus majusculis, membranaceis, viridibus.
A large Australian and Tasmaman genus of herbaceous, delicate, membranous, or succulent transparent green
plants.—Zcnccs rosulate or sheathing up the stem. Flowers solitary in all the New Zealand species, usually large
and green. Uqiper sepal concave, attached at the base to the back of the column, conniving with the linear petals
to form a hood over the column ; lateral sepals combined at the base, or up to the middle. Lip clawed, narrow,
mcluded in the perianth. Claw with a callus or a curved appendix. Column usually slender, winged above, with
the stigma on the face about half-way up. .intlær terminal. (Name from wrepoz, a wing, and arvXoe, a column.)
1. Pterostylis Br. ; caule folioso, foliis lineari-lanceolatis carinatis longe acuminatis, flore
magno, p eriantbii foliolis longe caudatis, labeUo lineari basi appendicula curva lineari-elongata apiee villosa.
B o i. Mag. t. 31 7 2 . A . Cunn. Prodr. L in d l. Gen. et Sp. Orchid.
H ab . No rtliern and Middle Islands. As far soutb as Akaroa, B a n k s a n d Solander, ete.
Much the largest and largest-flowered New Zealand species, 6 -1 S inches high. Leaves numerous, sheathing
the whole stem, produced much beyond the flowers, naiTOw, grassy, acuminate. Flower 14 -3 inches long. Sepals
unA petals produced into very long filiform tails. X;> with a long claw, narrow, linear-oblong; appendix \m%,
curved, tipped with a pencil of hairs.
2. Pterostylis australis. Hook. fil. ; caule foliato, foliis anguste Hneari-oblongis planis acuminatis,
scapo u ltra folia elongato, flore erecto, sepaHs lateraUbus subulatis erectis, supremo petalisque u ltra medium
decurvis longe acuminatis, labello lineari longe unguiculato, appendicula breviuscula curva apice peni-
ciliata.
H ab. Middle aud Southern Islan d s. P o rt WiUiam and Thomson’s Sound, L ya ll.
Nearly as large as P . Banksii, but the leaves are shorter, broader, not keeled, reticulated. Stem sheathed by
the leaves. Penantli | - 1 inch long, erect at the base, then suddenly curved downwards. Lateral sepals with
subulate erect tips. Upper sepah and petah with long acuminate points. Lip as in P . Banksii, but the appendix
is shorter.
3. Pterostylis graminea, Hook. fil. ; caule breviusculo foliato, foliis linearibus lineari-laneeolatisve
acuminatis, perianthio suberecto lente curvo foHolis acumiuatis, labello liiieari-obloiigo, appendicula brcvius-
cula curva penicillata.
H ab. N o rth e rn and Middle Islands. Auckland, Sinclair. E a st coast, Colenso. Otago, Ljyall.
^ A small species. 4 -6 inches high. Hke a miniature of P . Bankni, but without the long tails to the perianth,
which is only inch long.
4 . n a c s t f f a micromega,-Rook, a .-, foHis radicalibus petiolatis lineari-oblongis subacutis, cauHnis
superioribus vaginantibus, flore (pro planta) magno erecto lente curvo, petalis sepalisque acuminatis lateralibus
apice subulatis erectis, labello Hneari, appendicula brcHuscula apice penicillata.
H ab. N o rth e rn Islan d , Edgerley. E a st coast, Colenso.
Stem slender, 4 -8 inches long. Radical leaves few, petiolate, 2 inches long, linear-oblong, hardly acute •
eauhne numerous, upper sessile. Flower large for the size of the plant (whence the name). 14 inch long, erect’
curved slightly. Sepah and pelah acuminate ; lateral sepah with long, erect, subulate apices.
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5. P te ro s ty lis /« S a to , Hook. 111.; foliis radicalibus petiolatis elliptico-oblongis obtusis v. subacutis
reticulatis, scapo 1 -2 -fo liato , periantbio basi erecto supra medium curvo horizontali, sepalis p etalisque acutis,
sepaHs lateralibus apice subulatis, labello lineari-oblongo, appendice breviuscula apice penicillata.
H ab. N o rth e rn Is lan d . Marsh y places, E a s t coast, an d E u ab in e Mountains, Colenso.
This is a very handsome species, but, like its congeners, very variable in size ; alpine specimens are almost
stemless, with tlu-ee to four sessile radical leaves, a short scape, and a flower hardly exserted beyond them ; more
generally it is an erect plant, a span high, very like the P . micrmnega, but with larger, more reticulated radical
leaves and flowers, whose perianth (4 -1 inch long) is erect at the base, and then curved hoi-izontally, with the tips
of the petals and upper sepal bent downwards.
6. Pterostj'Hs tru llifo lia , Hook, fib ; pusilla, caule graciH, foliis radicalibus louge petiolatis late
ovato-cordatis acutis, scapo 2 -3 -b racteato , perianthio basi erecto dein decurvo, sepalis lateralibus apice
filiformibus supremo petaHsque acuminatis, labello lineari, appendice apice penicillata.
H ab. b io rth ern Islan d . Bay of Islands, Edgerley, Colenso, etc. Auckland, Sinclair.
A very common slender species, 4 -6 inches liigh. Radical leaves broadly ovate, cordate, triangular or the
form of a trowel, L inch long, on slender petioles 4~1 inch long. Scape with two or three small bracts. Ferianth
4 inch long, erect below, upper half horizontal or' decurved ; lateral sepah with fibform erect points, the other
sepal and petah acuminate; Up linear, with a sbort subulate blunt appendix, villous at the point.
7. Pterostylis pu b eru la . Hook, fil.; pusilla, foliis radicalibus eonfertis breve petiolatis ovatis acutis
acuminatisve, scapo glanduloso puberulo S-bracteato, perianthio basi erecto dein curvo, sepalis lateralibus
apice filiformibus supremo petalisque subacutis, labello lineari-oblougo, appendice su b u lata infra apicem
subramosa.
H ab. N o rth e rn Islan d . Auckland, Sinclair.
I have several good specimens of this peculiar little species, which is more robust than P . trullifolius, with
glandular scape, and crowded ovate acute radical leaves on short petioles. Raot of small tubers, attached to long
fibres. Leaves u inch long, with the petioles. Scape 2 -3 inches high, with three sheathing bracts. Perianth
4 inch long ; lateral sepals with filiform apices, upper and petah broad and blunt at the tip ; lip liuear-oblong, broader
and more membranous than in the previous species, with a delicate curved appendix, m-egularly but sparingly
fimbriate or branched towards the tip.
8. Pterostylis squamata, Br. ; foliis radicabbus eonfertis ovato-lanceolatis acumiuatis, scapo bracteato,
perianthio erecto, sepalis later.alibus brevibus Hnearibus obtusis supremo galeato acuto, petalis anguste
lineari-subulatis, columna apice u trin q u e la te alata, alis decurvis margiue superiore cornutis. B r . Brodr.
Lindl. Gen. et Sji. Orchid.
H ab. X^oi'theru Islau d . Auckland, Sinclair.
A very singular and beautiful plant, a native of Tasmania, easily recognized by the filiform bp, fringed with
feathery yellow hairs, and thickened iuto a round purple glandular head, like that of a nail. PUmt 3-8 iuches
high. Leaves sessile, numerous, crowded, radical, ovato-lanceolate, acuminate, A -l inch long. Scape with sheathing
bracts. Perianth erect, inch long ; upper sepal hooded, acuminate, the narrow petals cohering to its margin ;
lateral sepah defiexed, bnear, blunt, shorter than the upper. Lip with a om-ved, villous (sometimes blunt, glabrous)
appendix. Column with two broad projecting hooked fimbriated wings at the tip, which have a long erect subulate
horn.
Gen. XV. NEMATOCERAS, Hook. fi l.
Sepalum supremum cucullatum, lateralia elongata, filiformia, labello supposita, porrecta. Pe ta ia
elongata, filiformia, erecta, Labellum ma-ximum, cucullatum, tru n e atum , fimbriato-lacerum. Columna brevis.
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