1923] Pearson: More Neic Zealand Hepaticae 375 



Lophocolea heterophylloides Nees 



Habitat . — Whangerei, July 14. No. 52 with periantlis and J*. 

 Tanpo, May 16, No. 88; Tanpo, Mav 15. No. 46; Island Bar, June 5, 

 No. 42. ' 



Observations, No. 38. — This is a very variable and difficult species 

 to understand. Some forms seem so different from the type that one 

 feels inclined to consider them as distinct, but the characters vary so 

 much in the same tufts and even on the same plant that I have solved 

 the difficulty by lumping them together. 



Observations, No. 46. — This is a small male form with leaves entire, 

 retuse or emarginate, and with underleaves free, bifid with exterior 

 tooth on both sides. 



Observations, No. 42. — The specimen represents a small, flaccid 



innovant form, with numerous involucres but no perianths. The 



involucres are compressed and that, along with the comparatively 



large patulous underleaves, gives it the appearance of a Leioscyphus. 



I add the notes I made on its examination. 



Stem 1 cm. long, simple or rarely with a small branch, repeatedly 

 innovant, 3 times; on a cross-section, stem broader than thick, some- 

 what angular, 15 cells by 10, cortical cells 30, similar to the inner ; 

 leaves broadly ovate, obtuse, rotundate, retuse or on the young 

 branches bifid ; cells small to smallish, quadrate, 4, 5 and 6-sided, walls 

 thick, trigones very small ; underleaves roundish-quadrate, bifid to 

 about the middle, long tooth on exterior side of segments, segments 

 acuminate, narrowly connate with one or both leaves, patulous, stand- 

 ing off from the stem ; sub-bracts entire, often with a minute tooth at 

 their base ; bracts broadly ovate, entire, apex obtuse or rotundate ; 

 bracteole quinquedentate ; perianth (young) with mouth laciniate; 

 archegonia 20 ; perigonial bracts oval, ventricose. 



Lophocolea heterophylloides Nees. var. crassiflora var nov. 



Plate 105 



Dioicous ; medium size ; yellowish green in color ; stems slightly 

 ramose; leaves oblong-obovate, entire or slightly retuse, upper leaves 

 and sub-bracts with 1 or 2 minute teeth near the base, cells smallish 

 small to smallish, quadrate, 4, 5 and 6-sided, walls firm, no trigones; 

 underleaves large, roundish-quadrate, 6 or 7 segments, the two inner 

 segments largest, lanceolate acuminate ; bracts oblong, apex with few 

 teeth or laeinae, with a large tooth near base; perianth large, firm, 

 3 or 4 cells thick near base, mouth laciniate. 



Dimensions. — Stem 3 to 4 cm. long; with leaves 2 mm. wide ; diam. 

 of stem .3 mm. ; leaves 2 mm. X 1-5 mm., 1.5 mm. X 1 mm., 1 mm. X 

 .75 mm; cells .02 mm., .03 mm.; underleaves 1.25 mm. X -75 mm.. 



