Plate 159.-UTRIOULAR1 A NOV.E-ZELANDl^ and 

 UTRICULAKIA DELICATULA. 



Family LBNTIBULARIACEJ:.] [Genus UTRICULARIA, Linn. 



Utricularia novae-zelandiae, Hook. j. Fl. Nor. Zd. i, 200 ; Cheesein. Man. N.Z. Fl. .jCO. 

 Utricularia delicatula, Cheesein. Mini. N.Z. Fl. 5<jl. 



The genus Utricularia has been comparatively neglected in New Zealand, and 

 the distribution of the species is consequently imperfectly known. U. novcB- 

 zelandice, one of the two species figured in this plate, was first collected by 

 Mr. Colenso in 1845 on '" wet rocks at Palliser Bay," and was published bv 

 Sir J. D. Hooker in the " Flora Novie Zelandise." It does not seem to have 

 been observed again until 1867. when Mr. T. Kirk and Captain Hutton gathered 

 it on the Great Barrier Island. Since then it has been observed by myself at Lake 

 Ohia, in Mongonui County ; by Mr. W. T. Ball and myself at Taupaki, on the 

 Kaipara Railway ; near Waiuku, by Mr. Carse ; at Waihi, by Mr. Petrie ; near 

 Lake Taupo. by Mr. A. Hamilton : and in the Ngaire Swamp (Taranaki), by 

 myself. It has also been recorded by Mr. J. B. Armstrong from the Canterbury 

 Plains in swamps near the sea, but I have seen no specimens, and consequently 

 cannot be positive that the species has been correctly identified. 



U. delicatula was discovered by myself in 1880, in the extensive swamps near 

 Ohaupo, in the Middle Waikato district, but at that time I confounded it with 

 U. Colensoi. It was not until 1896. when I gathered it in abundance at Mangatete, 

 near Kaitaia, that its distinctness from that species was satisfactorily established. 

 More recently Mr. H. Carse has observed it in two or three other localities near 

 Kaitaia, and in swamps between Waiuku and the Manukau Harbour. 



Of the six species of the genus at present known in New Zealand, two 

 {U. protrusa and U. Mairii) fall into the section Natantes, all the species of which 

 have floating stems and submerged multifid leaves. The remainder belong to the 

 section Limosm, composed of plants growing in bogs, and which bear few radical 

 leaves, which may disappear altogether at the flowering period, and erect leafless 

 scapes or peduncles with one or few or many flowers. 



Utricularia novce-zelandias can be distinguished from all its allies by the pale- 

 purple flowers with a yellow eye : by the upper lip of the corolla being truncate 

 or very slightly retuse at the tip. never 2-lobed ; by the lower lip being very broad 

 and entire, and furnished with three broad raised ridges, each of which is longi- 

 tudinally grooved ; and by the short thick obtuse spur. U. delicatula is smaller 

 in all its parts, and the flowers are white with a faint yellow eye. The upper lip 

 of the corolla is conspicuously 2-lobed at the tip ; the lower is quite entire, and has 

 no trace of the raised longitudinal ridges so obvious in U. novm-zelandice : and the 

 spur is longer and narrower, and minutely 2-horned at the tip. It agrees with 

 U. Colensoi, so far as that species is known, in the shape of the upper lip, but differs 

 altogether in the lower lip, which in U. Colensoi is described as " broadly cuneate, 

 3-lobed, middle lobe retuse, disc with three gibbous prominences," all being cha- 

 racters non-existent in U. delicatula. The remaining species of the section LinioscB 

 found in New Zealand {U. monanthos) can be separated at a glance from both 

 U. delicatula and U. novw-zelandiw by the larger violet-purple flowers, broadlv cuneate 

 upper lip, very broad semicircular lower lip, and short obtuse spur. 



Plate 159a. Utricularia novw-zelandiix, drawu from specimens collected in Sphagnum bogs 

 near Waihi, Ohinemuri County. Fig. 1, bladder borne on the roots (x 7) ; 2 and 3, different views 

 of flower (X 4) ; 4, flower, with the corolla removed (x 6) ; 5 and 6, stamens (x 10) ; 7, ovary, with 

 style and stigma (x 10) ; 8, ripe fruit (x .3). 



Plate 1.59b. Utricularia delicatula, drawn from specimens collected in Spliagnum swamps near 

 Kaitaia, Alongonui County. Fig. 'J, creeping stem with leaves and bladders (x 2) ; 10 and 11, different 

 views of a bladder (x 8) ; 12, flower (x 4) ; 13, flower, with the corolla removed (x .5) ; 14, upper 

 lip of corolla, with stamens and pistil (x 6) ; 15 and 16, stamens (x 10) ; 17, ovary, style, and 

 stigma (X 10) : 18, npe capsule (x 3) ; 19, section of same, showing seeds (x 4). 



