MAKINK AM. I 3 



2. LBSSONIA ORANIUKOLIA. 

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

 rwutybto, Gepi>, Journal of Botany, UK (ft, p. 105. 

 Callus radicalis dense et irregularitcr ramosus, coriaceus. Stipes vaKlc mm- 

 pressu.s, inanj;inil>us obtusis, his vel ter vcl quater dichotomus, suhtcr quamquc 

 dichotomiam complanate expansiis ; rami sectione transversal! plano-convexi ancipites 

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

 Limin;i' lanceolato-lineares longissimac (1-8 met), latae (8-45 cm.), inarginiluis groMe 

 undulatis integerrimis, apice deleco, fissile*, in statu sicco coriaceaa scd fragiles. 

 Stipitis substnntin lacunis annulisque carens. Lamina? substantia coriacea e stratis 

 trihus composita ; cellulis corticalilms minutis fuscis congestis in series verticales 

 breves dispositis ; subcorticalibus rotundatis 1-2 seriatis quam corticalibus 

 magnitudine duplo majoribus ; hyphis medullaribus hyalinis extrorsum dense intmrsum 

 laxe inviccm juxtapositis flexuosis tubulos multos subinfundibuliformes vagina e cdlnlis 

 (Mrvulis fomposita vestitos circumstantibus. Zoosporangia ignota. Figs. 1-9. 



C'apo 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. yrarulifolui, we are now convinced, 

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

 ami ' Discovery ' plants must be distinguished specifically. We therefore dcs<-ril>e 

 them both in detail. 



L. gnnulifttlia is one of the larger species of Legxmiii, 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 L. fuscencens and L. nigrescent. In L. (jrnndifulia the 

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

 the genus by the great size of its unsplit lamina; ; the largest lamina; previously 

 recorded for any of the species were 60-90 cm. in length, and occurred in L. fusce*cen*, 

 Bory (H.H.kn. Flora Antarctica, I. 1847, p. 458). 



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

 and, when first taken out of the formalin solution in which it was preserved, measured 

 7*3 m. in length by 45 cm. in width. Another lamina measured 4*5 m. by 35 cm. 

 wide when moist before desici-ation. None of the mature fronds arc complete at the 

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



2 L 2 



