.MAI; INK AUI.E. 3 



2. LESSONIA GRANDIKOLIA. 

 (Plates I. and II , figs. 5-9.) 

 Lessonia grandifolia, Gcpp, Journal <>r lintauy, I:N>.">, p. 105. 



Callus radicalis dense ct irregulariter ramosus, coriaceus. Stipes valde com- 

 pressus, marginibus obtusis, his vel ter vel quater dichotomus, subtcr (jun]ii(|uc 

 dichotomiam complanate expansus ; rami sectione transversali plano-convexi ancipiles 

 marginibus acutis, laxe torti. Stipes totus e callo usque ad laminas 30-120 cm. 

 Lamina lanceolato-lineares-longissimae (1-8 met.), latee (8-45 cm.), marginibus grossc 

 undulatis integerrimis, apice deleto, fissiles, in statu sieco coriacejc sed fragiles. 

 Stipitis substantia lacunis annulisque carens. Lamina; substantia coriacea e stratis 

 tribus composita ; cellulis corticalibus minutis fuscis congestis in series verticales 

 breves dispositis ; subcorticalibus rotundatis 1-2 seriatis i[iiam corticalibus 

 magnitudine duplo majoribus ; hyphis medullaribus hyalinis extrorsum dense introrsum 

 laxe iuvii-em juxtapositis flexuosis tubulos multos subinfundibuliformes vagina e cellulis 

 parvulis composita vestitos circumstantibus. Zoosporangia ignota. Figs.' 1-9. 



Cape Adarc (Jan. 9, 1902), hauled up with anchor from 18 fathoms; Coulman 

 Island, off Cape Wadsworth, 18 fathoms. 



In our previous account of this species (Journal of Botany, !.<:) we quoted 

 specimens gathered both by the Scottish and the British Expeditions, and from the 

 order in which they were cited it would naturally be inferred that the type described 

 was the ' Scotia ' plant. We wish to state that the type was and is the ' Discovery ' 

 plant, and that the diagnosis was founded upon it alone, the ' Scotia ' material being 

 too fragmentary to furnish data for a complete description. Though at the time we 

 regarded the ' Scotia ' fragments as belonging to L. </i'<in>//fi>fi<t. we are now convinced, 

 after having examined more carefully their microscopic structure, that the ' Scotia ' 

 and 'Discovery' plants must be distinguished specifically. We therefore describe, 

 them both in detail. 



L. grandifolia is one of the larger species of Li'^miin, but is not one of the 

 dendroid members of the genus, that is, it has not the sturdy, round, tough, persistent, 

 well-developed stem, apically branched, and showing rings of secondary thickening, 

 which is so marked a feature of Z/. /wsceseens and L, nigrescens. In I.. //n/,/,///;7/<> the 

 stem is subsidiary to the laminae, and the species is distinguished from all the rest of 

 the genus by the great size of its unsplit laminae; the largest laniinaj previously 

 recorded for any of the species were 60-90 cm. in length, and occurred in /,. fuxct '*<< //*, 

 Bory (Hooker, Flora Antarctica, I. 1847, p. 458). 



In our specimens of L. grandifolia the. largest lamina is 5'7 m. when drv, 

 and, when tirst taken out of the loi-iiialin solution in which it was preserved, measured 

 7':'. m. in leiigih by 15 cm. in width. Another lamina measured I ' 5 m. by :',5 mi. 



wide when moist before "desiccation. Not f the mature fronds are complete at the 



apex, but we are unable to say whether or not this means thai the previous year's 



2 L 2 



