TYPE 0. GRAINS SIMPLE, ECCENTRIC, ROD-SHAPED. 231 



Musa paradisiaca Linn. {Musaccw.) Fruit. According to H. Criiger (Bot. Zeit., 1854, Taf. ii, 

 fig. 1), the grains are oval and elongated (in the interior of the fruit) to linear (in the rind of 

 the fruit); 1.5 to 10 times as long as broad; with distinct lamellaj; hilum apparently at the 

 thicker end, one-half to almost one-eleventh eccentric. 



Caladium seguinum Vent.; Dieffenhachia seguine Schott. (Aroidece.) Root-stock. According to 

 Schleiden (Grundzuge, 3. Aufl., 1 fig., 2d on p. 184) and H. Criiger (Bot. Zeit., 1854, pi. ii, figs. 

 8 and 15) the grains are rod-shaped; 2 to 10 times as long as thick; frequently with a lateral 

 wart-like or lobe-like process formed by an outer system of lamelloe which is superimposed 

 at right angk's to the longitudinal axis; with distinct lamellse; hilum end sometimes slightly 

 thicker, sometimes slightly thinner, than the distal end; eccentricity about one-sixth. 



Philodendron grandifolium Schott. {Aroidew.) Root-stock. According to H. Criiger (Bot. Zeit., 

 1854, Taf. 11, figs. 7 and 13), the grains are elongated to lanceolate, or rounded-triangular 

 (and then probably compressed); sometimes bilobate; 3 to 4 times as long as broad; with 

 distinct lamellae; hilum at the broader end, about one-sixth or more eccentric. 



Achimenes tubiflora Nicholson ; DolicJiodeira tubiflora Hanst. ; Gloxinia tubiflora Hook. (Gesneriacece.) 

 Fresh bulbs. Grains rod-shaped, the smaller ones oval or conical; many with one (rarely with 

 two) large or small lateral wart-like appendage, which is found occasionally at the proximal end, 

 sometimes in the middle, but chiefly at the distal end; about 5 times as long as thick; terete; 

 lamellae numerous, distinct, almost all incomplete; instead of the hilum a small cavity with one 

 small transverse fissure, or with two short fissures directed towards the distal end ; about one- 

 eighteenth eccentric ; two ends usually alike in thickness, the hilum end rarely somewhat thicker 

 (in the small grains, as a rule, the hilum lies in the thicker end). Length about Q6iJ., thickness 

 without the appendage about 16/n, but with the appendage almost double the size. 



Guthnickia atrosanguinea Regel. (Gesneriacece.) Fresh scales of the root-stock. Grains rounded-oval to 

 oval-cuneiform, and cylindrical-oval; about 2.5 times as long as broad; circular in transverse 

 section; the broadest end slightly compressed; lamellae distinct; frequently an external lateral 

 system of lamellae; both ends of nearly equal thickness; the hilum end occasionally somewhat 

 thicker or thinner than the distal end. Length about 35ai, width about 22/^. Among these 

 are some semi-compound and some completely compound grains of two components. 



Plectoponia fimbriatum Hanst. (Gesneriacece.) Fresh scales of the root-stock. Grains usually oval, 

 less frequently triangular-oval; the broader ones slightly compressed, the narrower terete; 

 both ends of almost equal thickness. Length about 28;u. 



Seemannia temifolia Regel. (Gesneriacece.) Fresh scales of the root-stocks. Grains mostly elongated- 

 oval or cylindrical-oval; more rarely conical or somewhat irregular; usually 2 to 3 times as 

 long as broad; terete; the broadest ones slightly compressed; lamellae usually distinct; often a 

 lateral wart-like process consisting of a separate system of lamellae (as in Dolichodeira) ; 

 the two ends are usually of nearly equal thickness; although the hilum end may be either 

 thicker or thinner than the distal end, which latter is sometimes broadened into a blunt, 

 knife-like edge. Length about bOfx, thickness about dO/x. 



Dentaria enneaphyllos Linn. (Brassicacece; Cruciferce.) Dry scales of the root-stock. Grains oval, 

 conical, oblong, oval-triangular, frequently somewhat irregular; 1.5 to 3 times as long as 

 broad; the broader ones compressed to about half their width, the narrower terete; without 

 lamellae; instead of the hilum a small cavity is often observed from which a dehcate fissure 

 may radiate; the hilum end frequently thicker, sometimes of equal thickness, rarely thinner 

 than the distal end. Length about 42^, width about 25/i. 



Krameria triandra R. P. (Polygalacece.) Dry roots. Grains mostly rod-shaped or oval, sometimes 

 conical or club-shaped, frequently arched or even irregular; also with single knob or lobe- 

 like processes; terete; about 5 times as long as thick; the broader ones slightly compressed; 

 about 3 times as long as broad, and 5 times as long as thick; lamellae rare and indistinct; 

 occasionally instead of the hilum a small cavity is observed from which short fissures occa- 

 sionally radiate; about one-eighth eccentric; hilum end either narrower or broader than the 

 distal end. Length about 42/j. Among these are compound grains of few and mostly equal- 

 sized components (see type 14). Also rounded simple grains are often found, and indeed 

 sometimes almost exclusively, while in some parts of the tissues the oblong grains and in 

 still other parts the compound grains appear in greater numbers. Many of the apparently 

 round, simple grains on closer investigation proved to be separated-grains. 



