680 



STARCHES OF AMABYLLIDACKE. 



With ferric chloride the reaction begins in a very few grains in 3 minutes. It is complete in 

 half the grains in 18 minutes and in all in an hour. It is the same qualitatively as that of the grains 

 of N, horsfieldii. 



There was no reaction with Purdy's solution. 



Differentiation of Certain Starches of the Genus Nardssus. 



HisTOLOOiCAL Characteristics. 

 Conspicuotis Forms. 



N. hortfieldii: Usually simple, rarely compounds and 

 aKgregates, rarely pressure facets, simace some- 

 WEat insular. Ovoid to oval and elliptical. 



N. maximus: Usually simple, few compounds and aggre- 

 gates, few pressure facets, surface often very irreg- 

 ular. Oroid to oval and elliptical, lenticular and 

 nearly spherical. 



N. bulbocodium: Usually simple, some compounds and 

 aggregates, some well-defined pressure facets, ag- 

 gregates generally fairly regular. Ovoid to oval 

 and elliptical. 



N. bulbocodium var. conspicua: Usually simple, few com- 

 pounds and aggregates, rarely pressure facets, 

 often irregular. Ovoid to oval and elliptical. 



N. buU>ocodiwn var. monophyUua: Usually simple, rare 

 compounds and aggregates, rarely pressure facets, 

 somewhat irregular. Ovoid to oval and elliptical. 



N. ineomparabUia: Usually simple, rarely compounds and 

 aggregates, rarely pressure facets, surface irregu- 

 lar. Ovoid to oval and elliptical. 



N. odorus: Usually simple, a few compounds and aggre- 

 gates, rarely no pressure facets, surface often irreg- 

 ular. Ovoid to oval and elliptical. 



N. poetieus: Usually simple, few compounds and aggre- 

 gates, pressure facets rare, surface very irregular. 

 Ovoid to oval and elliptical. 



N. biflorus: Usually simple, rarely compounds and aggre- 

 gates, pressure facets rare, surface sometimes irreg- 

 ular. Ovoid to oval and elliptical. 



N. jonquiUa: Usually simple, few compounds and aggre- 

 gates, pressure facets rare, surface often irregular. 

 Ovoid to oval and elliptical, irregtilarly quadri- 

 lateral and triang\ilar. 



N. jonquiUa var. rugvlosus: Usually simple, few aggre- 

 gates, rarely poorly defined pressure facets, sur- 

 face irregular. Ovoid to oval and elliptical, ir- 

 regularly quadrilateral and triangular. 



N. jonquiUa var. campernelli rugvlosus: Usually simple, 

 few small aggregates, rarely pressure facets, surface 

 somewhat irregular. Ovoid to oval, irregularly 

 quadrilateral and triangular. 



N. tazetta var. orientalis: Simple, few small aggregates, 

 rarely pressure facets, surface somewhat irregular. 

 Ovoid to oval, irregularly quadrilateral and tri- 

 angular. 



Hilum — Form, Number, and Position. 



N. horsfieldii: Form fairly distinct, small, round or len- 

 ticular; single or multiple; often fissured, fissure 

 usually small, clean-cut or ragged. Position usually 

 eccentric, about 0.4 to 0.25 of longitudinal axis. 



AT. marimus: Form not very distinct, small, round; often 

 fissured, fissure usually small and clean-cut. Posi- 

 tion usually eccentric, about 0.33 to 0.25 of longi- 

 tudinal axis. 



N. huU>ocodium: Form not very distinct, comparatively 

 small, round, lenticular or elUpsoidal, may be 

 multiple; often fissured, commonly one long fissure 

 often with branches. Position usually eccentric, 

 about 0.4 to 0.33 of longitudinal axis. 



N. bulbocodium var. conspicua: Form not very distinct, 

 small, round or lenticular; often fissured, fissure 

 usually small, ragged and irregular. Position 

 usually eccentric, about 0.4 to 0.33 of longitudinal 



Histological Characteristics. — Continued. 

 Hilum — Form, Number, and Position. — Continued. 



N. bulbocodium var. morwphyUus: Form not very dis- 

 tinct, small, round or lenticular; usually fissured, 

 fissure usually small and irregular. Position usually 

 eccentric, about 0.4 to 0.33 of longitudinal axis. 



N. incomparabilis: Form not very distinct, small, round 

 or lenticular; usually fissured, fissure usually small 

 and ragged. Position usually eccentric, about 0.4 

 of longitudinal axis. 



N. odorus: Form not very distinct, small, round or 

 lenticular; rarely fissured; fissure usuaUy small and 

 clear-cut. Position usually eccentric, about 0.4 to 

 0.33 of longitudinal axis. 



N. poetieus: Form single and multiple; distinct as a 

 round or lenticular spot; nearly always fissured, 

 fissures large or small, clear-cut or ragged. Posi- 

 tion usually eccentric, about 0.4 to 0.33 of longi- 

 tudinal axis. 



N. biflorus: Form indistinct, small, round or rarely 

 multiple; almost invariably fissured, fissuration 

 varied. Position usually eccentric, about 0.4 to 

 0.33 of longitudinal axis. 



N. jonquilla: Form not very distinct, rather small, 

 single or multiple, round; sometimes fissured, fis- 

 sure usually small, variable. Position usually 

 eccentric, about 0.4 to 0.2 of longitudinal axis. 



N. jonquiUa var. rugulosus: Form not very distinct, 

 small, round or lenticular; usually fisstired, fissure 

 usually small and clean-cut. Position usually 

 eccentric, about 0.33 of longitudinal axis. 



N. jonquUla var. campernelli rugvlosus: Form not very 

 distinct, small, round; often fissured, fissures usu- 

 ally small and usually clean-cut. Position usually 

 eccentric, about 0.33 to 0.25 of longitudinal axis. 



A'', tazetta var. orientalis: Form usually very indistinct, 

 small, round to rarely lenticular; often fissured, 

 fissure usually very small. Position usually eccen.- 

 tric, about 0.4 to 0.2 of longitudinal axis. 



LamellcB — General Characteristics and Number. 



N. horsfieldii: Distinct, rather fine, often irregiilar, con- 

 tinuous rings. 12 to 14 on the larger grains. 



N. maximus: Not very distinct, rather fine, fairly regu- 

 lar, continuous rings. 8 to 12 on the larger grains. 



N. bulbocodium: Not distinct, comparatively coarse, 

 fairly regular, continuous rings. 6 to 10 on the 

 larger grains. 



N. btdbocodium var. conspicua: Rather indistinct, coarse, 

 regular, continuous rings. 6 to 8 on the larger 

 grains. 



N. bulbocodium var. monophylhis: Not very distinct, 

 coarse, regular, continuous. 5 to 7 on the larger 

 grains. 



N. incomparabilis: As a rule, invisible, coarse, regular, 

 continuous rings. Number not determined. 



N. odorus: Not distinct, irregular, continuous rings, 

 rather fine. 10 to 12 on the larger grains. 



N. poetieus: Not very distinct, coarse, regular, continu- 

 ous rings. 5 to 6 on the larger grains. 



N, biflorus: <3)mmonly invisible, fairly regular, coarse, 

 continuous rings. Number not determined. 



N. jonquilla: Not very distinct, coarse, fairly regular, 

 continuous, coarse rings. Number not determined. 



N. jonquUla var. rugulosus: Usually indistinct, regular, 

 rather coarse, continuous rings. 6 to 10 on the 

 larger grains. 



