202 DIFFERENTIATION AND SPECIFICITY OF STARCHES. 



Andropogon ncpalensis Hort. borol. {Graminacece.) Dry seed. — Grains spherical, occasionally by 

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

 fissures radiate Size about 13 to Yin. 



Anthestiria cymbaria Roxb. ; Andropogon cymharius Linn. (Graminacece.) Dry seed. — Grains romided, 

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

 20 to 25m. 



Anthestiria pseudo-cymbaria Steud.; Andropogon cymharius Hochst. {Graminacem.) Dry seed. — 

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

 fissures. Size about .32 to 37/i. 



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

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

 about 16 to 20/j. 



Androscepia gigantea Brongn.; Apluda gigantea Spreng. (Graminacece.) 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^- 



Imperata arundinacea Cyrill. (Graminacece.) Dry seed. — Grains spherical 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 ll/x. Compound grains of 2 to 5 

 equal part-grains are also found. 



Saccharum spontaneum Linn. (Gra?ninacece.) 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 7m. Com- 

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

 quite ripe. 



Erianthus ra.ven7icB Beauv.; Saccharum 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//. Among them numerous separated-grains 

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

 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 15/x. 



Hohenbergia strobilacea Schult. fil. (Bromeliacece.) Dry seed. — Grains spherical or oval-spherical, 

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

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

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



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

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

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



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

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

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

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

 (type 14). 



Pterostegia drymarioides F. M. (Polygonacece.) Dry seed. — Grains rounded, more or less angular 

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



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 10/i. 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 sometimcjs have a few very short radial fissures. Size about 13/1. 



Polygonum tinctorium Lour. (Polygonacece.) Dry seed. — Grains rounded, somewhat angular owing 

 to pressure ; with large or small hole. Size about IS/x. 



