202 DIFFERENTIATION AND SPECIFICITY OF STARCHES. 



Andropogon ncpalcnsis Hort. berol. {Graviinacece.) Dry seed. Grains spherical, occasionallj' by 

 means of pressure somewhat angular; with small central cavity from which single or several 

 fissures radiate. Size about 13 to 17^. 



Anthestiria cymbaria Roxb. ; Andropogon cymbarius Linn. (Graminacece.) Dry seed. Grains rounded, 

 or rounded-oval, sometimes somewhat angular to polyhedral owing to pressure. Size about 

 20 to 25m. 



Anthestiria pseudo-cymbaria Steud.; Andropogon cymbarius Hochst. {Graminacece.) Dry seed.^ 

 Grains rounded, angular with rounded corners to polyhedral; with central cavity and radial 

 fissures. Size about 32 to 37/i. 



Anthestiria laxa Andr. {Graminacece.) Dry seed. Grains spherical to oval, often more or less 

 angular owing to pressure; with small central cavity and marked radial fissures. Size 

 about 16 to 20/i. 



Androscepia gigantea Brongn.; Apluda gigantea Spreng. {Graminacem.) Dry seed. Grains spherical 

 or oval-spherical, many of them with rounded corners, or even polyhedral, owing to pres- 

 sure; usually with a small cavity and several radial fissures. Size about 20 to 26/i. 



Imperata arundinacea Cyrill. {Graminacece.) Dry seed. Grains sjiherical or oval-spherical, angular 

 with rounded corners; with central cavity and radiating fissures. Size about 13 to 17^- 

 Among these are found separated-grains with one curved and one to four plane surfaces; 

 hollow, and with several radial fissures, size about 3 to 11^- Compound grains of 2 to 5 

 equal part-grains are also found. 



Saccharum spontaneuvi Linn. {Graminacew.) Dry seed. Grains spherical or oval, or rounded- 

 angular; with a large or small cavity. Size about 9/i. Among these are some separated- 

 grains with one curved and one to three plane surfaces; also hollow. Size about 7/n. Com- 

 pound grains of few equal-sized part-grains are occasionally present. The seeds were not 

 quite ripe. 



Erianthxis ravennce Beauv.; Saccharwn ravennce Murr. {Graminacece.) Dry seed. Grains spherical or 

 oval-spherical, some of them almost polyhedral owing to pressure; with central cavity, 

 usually large, and radial fissures. Size about 21/i. Among them numerous separated-grains 

 with one curved and 1 to 4 plane surfaces; also with a cavity and fissures. Size 4 to 15ju. 

 Few compound grains of 2 to 5 equal-sized part-grains are occasionally present. 



Zoysia tenuifolia Willd. {Graminacece.) Dry seed. Grains spherical, oval-spherical, angular with 

 rounded corners or almost polyhedral; usually with a central cavity, and frequently with 

 radial fissures. Size about lUfj.. 



Hohcnbergia strobilacea Schult. fil. {Brojueliacece.) Dry seed. Grains splierical or oval-spherical, 

 frequently somewhat angular owing to pressure, sometimes irregular; no lamellae; often 

 with a small central cavity without fissures. Size about 15/i. Among them compound 

 grains of few, equal-sized part-grains (type 14). 



Billbergia zebrina Lindl. {Bromeliacece.) Dry seed. Grains rounded, sometimes irregular; no lam- 

 ellae; with central cavity from which fissures usually radiate. Size about 15/i. Among them 

 compound grains of few equal-sized part-grains (type 14). 



Pitcairnia (dbuccefolia Schrad.; P. punicea Lindl. {Bromeliacece.) Dry seed. Grains more or less 

 spherical, occasionally somewhat irregular; without lamellaj, mostly with large central 

 cavity from which fissures sometimes radiate; some of them somewhat shrunken, due 

 to drying. Size about 14 to 18//. Among them some compound grains of few parts 

 (type 14). 



Pterostegia drymarioides F. ]\L {Polygonacece.) Dry seed. Grains rounded, more or less angular 

 owing to pressure; with small or large central cavity. Size about lO/i. 



Oxyria digyna Campd. {Polygonacece.) Dry seed. Grains angular with rounded corners to poly- 

 hedral with rather sharp corners and edges; the small ones solid, the larger ones with small 

 central cavity, and the largest ones with single radial fissures. Size about lO/u. The grains 

 as they come from the cell frequently adhere to each other in groups or in rows. 



Rheum hybridum Ait.; Rheum rhaponticum Linn. {Polygonacece.) Dry seed. Grains exactly spherical, 

 sometimes somewhat angular owing to pressure; without lamellae; with small central cavity, 

 the largest sometimes have a few very short radial fissures. Size about 13/u. 



Polygonum linctorium Lour. {Polygonacece.) Dry seed. Grains rounded, somewhat angular owing 

 to pressure; with large or small hole. Size about 13/i. 



