consists of columns (three always, as far as I know) which are united 

 at the top, and into a stem at the base. Usually these plants have 

 been included in the genus Colus, but the original of that genus is 

 for me a very different plant with the receptacle truly clathratc. 



PSEUDOCOLUS ROTHAE (Fig. 21). There are at Kew 

 two collections of this plant. One from Miss Carter. Moonan Brook, 

 N. S. W., and the other from Bailey, Brisbane. The former has the 

 arm broken and was referred by Professor Fischer (2d Unters., p. 23) 

 to Colus Muelleri. The latter is more perfect and is accompanied 

 by a sketch from Bailey from which our figure has been made. It 

 was called by Professor Fischer (1. c.) Colus Rothae, but he consid- 

 ered it a doubtful form of Colus Muelleri and omits it from his latest 

 work. If Kalchbrenner who described and figured Anthurus Muelleri- 

 anus gave a correct figure of it (and his figure is all that is known. 

 see Fig. 14) it is a true Anthurus with free lobes and has no relation 

 or resemblance to this plant. Bailey sent with his sketch the follow- 

 ing notes : "Divisions of the receptacle always three, arched, and 

 joined at the apex. Of a rich orange, and obtusely triangular, porous- 

 celled. The entire portion (stipe) very short or not extending be- 

 yond the volva." There grows in Java a very similar species, but more 

 robust and with the arms strongly convolute, crenate on the inner 

 sides. There is a nice drawing of it at Kew, made by Zollinger many 

 years ago. It has never received a name unless perhaps "Laternea ? 

 pentactina," Monsunia p. 23, refers to it, but it is surely not the same 

 as Berkeley's plant under this name. 



THE GENUS CLATHRUS. This genus is well known in 

 Europe, where the original species, Clathrus cancellatus, is a very 

 celebrated plant. The genus has a receptacle which is "clathrate" 

 or consists of lattice work. The two common species of Australasia 

 belong in fact to a different genus called Ileodictyon and their struc- 

 ture is well known. We do not maintain the genus Ileodictyon be- 

 cause there are so many other species that can not be told whether 

 they are Clathrus or Ileodictyon from the material in the museums. 

 The structure of the arms of the genus Clathrus is cellular; that of 

 Ileodictyon is tubular. 



CLATHRUS CIBARIUS (Fig. 22). This is a very common 

 species in New Zealand. It is rare in Australia and we know of but 

 two collections from Australia. It is a large plant we judge, four or 

 five inches in diameter when fully expanded. The width of the flat- 

 tened branches is a centimeter or more. When we published our 

 plate (91) we knew of no photograph of a fresh plant, but have 

 since found a photograph in the Economic Museum at Kew. It was 

 made by a Mr. Clarke and represents a number of plants. Our 

 cut (Fig. 22) is from this photograph, and we do not know how 

 much it has been reduced. Clathrus cibarius appears to be very com- 



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