. The Gardens' bulletin; Straits Settlements . e through a distinct, if immar-ginate, foramen. In Nectria typically, according to Tulasne,de Bary and Pethybridge, though there seem to have beenno exact observations in recent years, the walls of the ascideliquesce at maturity and the mass of spores liberatedinside the perithecium is squeezed through the ostiole in aslimy tendril. But to what extent are these bryophilousspecies really cogeneric with other Nectrise which may besaprophytes or parasites of most diverse order preferringstems, leaves or fruits, ferns, fungi, algse, lichens or evenins
. The Gardens' bulletin; Straits Settlements . e through a distinct, if immar-ginate, foramen. In Nectria typically, according to Tulasne,de Bary and Pethybridge, though there seem to have beenno exact observations in recent years, the walls of the ascideliquesce at maturity and the mass of spores liberatedinside the perithecium is squeezed through the ostiole in aslimy tendril. But to what extent are these bryophilousspecies really cogeneric with other Nectrise which may besaprophytes or parasites of most diverse order preferringstems, leaves or fruits, ferns, fungi, algse, lichens or eveninsects? This large group of such uniform constructionappears but formally classified at present at levels ofconvergence and without regard for sequence of environ-ment or or biological trend. Not merely as Fusaria dothey appeal for physiological enquiry. The hyphopodia resemble those of such Perisporiaceseas Balladyna or the appressoria of Erysiphacese. Theintracellular haustorium may have evolved from such arudiment. Gardens Bulletin, 141. Text-Fig. 4. Neotiella crozalsiana: apices of dehisced asci, germinating spores, andstages in the development of the haustorial branch: X 500. NEOTIELLA CROZALSIANA GreletA few details may be added to my previous account, Text-Fig. 4. The asci dehisce through a bilabiate slitwhich is generally more or less median and longitudinal butwhich is occasionally so oblique as to appear as an elongatelid. Several germinating spores were found on the leavesof the host. A single germ-tube arises near one end ofthe spore and as it grows the oil-drops in the spore dwindleand disintegrate. When the germ-tube is about 10(V long,the first cell is cut off near the spore and from this cell ahaustorial branch grows out: as in mildews and otherectoparasites the germ-tube sinks a haustorium at the firstopportunity. The haustorial branch is formed by apicalgrowth and acropetal thickening of the wall. It startsobliquely forward, in the direction of the apex
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
