h.is n< . tself th< ticated compound stipes or rhachis which is 



found ï ti ti ted, bul lias maintained its monosiphonous axis 



and ontinued, though regularly interrupted, growth, and in 



dimorphism of habit. rhe basal position of the flabella suggests thal thej are the older 



that the glomeruli are a later development of the plant. The interrupted mode 



affinit) with Halinteda (see p. 



In ik 11 published in Flora, Band 92. pp. 97 - ioi, with figs.) a description 



of :■ jenus of Valoniaceae from the Loo-choo Islands, which at first sight 



: i.) be nearly allied in habit to Tydemania. We have not seen the planl . 



but j m the description and figures we are convinced thal Rudicularia has no connection 



whatever with Tydemania nor with the Codiaceae. It has been referred i<> Apjohnia by Wille 



tin Engler und Prantl's nat. Pflanzenfam. 1. Teil, 2. Abteil. Nachtrage 1910. pp. 111. 112!. 



Hut inclined to tliink that Heydrich was righl in keeping it distinct from that genus. 



It is an interesting plant which requires further elucidation. 



1. Tydemania expeditionis Web. v. Bosse loc. cit. 



:':tionis Gepp in Trans. Linn. Soc. (Bot.) VII. 1908. p. 174, pro parte; and 

 - cit. Zool.) vol. XII. [909. p. 384, pro parte (figures also excluded). 



Hab. Indic. Siboga Expedition. Stat. yS. Lumu-Lumu, Borneo bank! • — Stat. y> . Kabala-dua, 

 Borneo bank. on coral reef! — Stat. 91. Muaras-reef, Celebes Sea! — Stat. 149. Lagune 

 of Kau Island, on coral reef! — Stat. 213. Saleyer, roef! — Stat. 259. Banda, reef! — 

 Stat. 312. Saleh Bay, North coast of Sumbawa, 15 — 29 meters! — de Bril near Maca 

 Snackey ! 



mts more or less calcilïed, glaucous green, moderately large, about 12 cm. long. 

 simple or with a few main branches above. 



Main axis prostrate below, cylindrical, monosiphonous, straggling, tough, about 400 — 

 r thick, now and again putting out branches, some of which put out a few rhizoids, and 

 others which sometimes bear a few lateral flabella at short ii-regular intervals below, and above 

 always bear a s< I glomeruli which arise at intervals of about 1 cm.; the flabella (i [.5 cm. 



»hort-stalked, beaded at base, monostromatic, calcified, and composed of laterally 

 connate dichotomous filaments, which taper from 250a at the base to 637. at the apices ; the 

 glomeruli are often contiguous and are composed of four yerticillately arranged branches which 

 divide repeatedly, dichotomously and divaricately in alternate planes and at short distances 

 into eroid tangle of laxly interwoven ramelli [Figs. 153, 154 . 



This genus was entirely unknown until collected by Madame Weber van Bosse in the 



Indian Archipelago during the Siboga Expedition, and published by her in nim doe. cit. 1. 



Her plants are mostly large and glomeruliferous (fig. 153), but two or three of them bear at 



imbent base monostromatic flabella in pairs or singly in place of glomeruli, as described 



Had these two diverse forms <>f ramiftcation nol been found arising from one 



al filament, they would undoubtedly have been regarded as characteristic of two 



I he glomerulous state oi i j lemania somewhal resembles glomeruli 



