GENUS LILIUM. 



495 



Differentiation of Certain Starclies of the Genus Lilium. — Continued. 



I 



Histological Characteristics. — Continued. 

 Conspicuous Forms. — Continued. 



L. tigrinum var. splendens: Same a.s in L. candidum, ex- 

 cept more irregular, more rod-shaped (curved or 

 bent) and club-shaped. The triangular forms are 

 narrower, and there are fewer ovoid grains. 



L. henryi: Same as in L. candidum, except more irregular 

 and fewer ovoid grains. 



L. auralum: Same as in L. candidum, except more irreg- 

 ular and more narrow triangular and pyriform 

 grains, and not quite so many ovoid forms. 



L. spedosum var. album: Same as in L. candidum, except 

 more broad and narrow triangular grains and 

 irregular elliptical grains, and fewer ovoid. 



L. martagon: Same as in L. candidum, except more irreg- 

 ular and more irregular elliptical, bottle-shaped, 

 and rod-shaped, either straight or curved, and fewer 

 ovoid. 



L. superbum: Same as in L. candidum, except fewer eUip- 

 tical grains. 



L. tenuifolium: Same as in L. candidum^ except more irreg- 

 ular and more irregularly elliptical and triangular 

 and fewer ovoid. 



L. pardalinum: Same as in L. candidum, except somewhat 

 irregular and more pyriform, clam-shell-shaped, 

 and curved or straight rod-shaped grains, and fewer 

 ovoid grains. 



L. puberulum: Same as in L. candidum, except often very 

 irregular, may be double, and more rod-shaped 

 grains, fewer ovoid and triangular. 



Hilum — Form, Number, and Position. 



L. candidum: Form single, small, not very distinct round 

 spot, often fissured, fissure very short, narrow, 

 clean-cut, and transverse. Position 0.2 to 0.11 of 

 longitudinal axis, usually 0.11. 



L. longiflorum var. giganleum: Form same as in L. candi- 

 dum, but sometimes a cavity and less often fissured. 

 Position O.IG to 0.11 of longitudinal axis, usually 

 0.16. 



L. longiflorum var. eximium: Form same as in L. can- 

 didum, but rarely if ever a cavity. Position 0.16 

 to 0.14 of longitudinal axis, usually 0.16. 



L. parryi: Form same as in L. candidum, but more dis- 

 tinct, usually a cavity, not often fissured. Posi- 

 tion 0.25 to 0.14 of longitudinal axis, usually 0.2. 



L. rubellum: Form same as in L. candidum, but more dis- 

 tinct. Position eccentric 0.2 to 0.2.5 of longitudinal 

 axis, u.sually 0.16. 



L. philadelphicum: Form same as in L. candidum, but 

 more ilistinct, always a cavity, often fissured. 

 Position eccentric 0.25 to 0.16 of longitudinal axis, 

 usually 0.20. 



L. ligrinum var. splendens: Form same as in L. candidum, 

 but less often fissured. Position eccentric from 

 0.20 to 0.16 of longitudinal axis, usually 0.16. 



L. henryi: Form same as in L. ca/ulidum, but more dis- 

 tinct, sometimes a number of irregular fissures. 

 Position 0.20 to 0.11 of longitudinal axis, usually 

 0.20. 



L. auratum: Form same as in L. candidum. Position 

 eccentric 0.20 to 0.16 of longitudinal axis, usually 

 0.20. 



L. spedosum var. album: Form same as in L. candidum, 

 but more distinct. Position eccentric 0.20 to 0.14 

 of longitudinal axis, usually 0.16. 



L. martagon: Form same as in L. candidum, but fairly 

 distinct. Position eccentric 0.20 to 0.10 of longi- 

 tudinal axis, usually 0.16. 



L. superbum: Form same as in L. candidum, but fairly 

 distinct and sometimes oval in shape. Position 

 eccentric 0.25 to 0.16 of longitudinal axis, usually 

 0.2. 



Histological Cuakactebistics. — Continued. 

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



L. tenuifolium: Same as in L. candidum, but more dis- 

 tinct and rarely fissured. Position eccentric 0.25 

 to 0.16 of longitudinal axis, usually 0.2. 



L. pardalinum: Same as in L. candidwn, but fairly dis- 

 tinct and sometimes more than one fissure. Posi- 

 tion eccentric 0.2 to 0.10 of longitudinal axis, 

 usually 0.14. 



L. puberulum: Same as in L. candidum, but sometimes 2 

 or even 3 liila in one grain; usually fissured by sev- 

 eral deep fissures radiating from a central cavity or 

 by a single, short, straight, transverse line. Posi- 

 tion eccentric 0.16 to 0.10 of longitudintd axis, usu- 

 ally 0.14. 



LameUce — General Characteristics and Number. 



L. candidum: Fairly distinct, comparatively fine ellipses, 

 rings, or arcs of circles, continuous and discontinu- 

 ous, usually regular. 34 to 36 on larger grains. 



L.longiflorumxeur.giganteum: Sa.me as in L.candidwn. 35 

 to 40 on larger grains. 



L. longiflMTuvi var. eximium: Same as in L. candidum. 36 

 to 38 on larger grains. 



L. parryi: Same as in L. candidum, but not so distinct, 

 sometimes 2 sets of lamells. 25 to 30 on larger 

 grains. 



L. rubellum: Same as in L. candidum, but slightly more 

 distinct, rarely 2 sets of lamells. 26 to 30 on larger 

 grains. 



L. philadelphicum: Same as in L. candidum, but not so 

 distinct and usually regular. Sometimes 2 or 3 sets 

 whose longitudinal axis differs from that of the rest 

 of grain. 15 to 20 on larger grains. 



L. tigrinum var. splendens: Same as in L. candidum, but 

 not so distinct, more irregular, sometimes small sets 

 of 2 or 3 whose axes differ from that of rest of the 

 grain. About 30 on larger grains. 



L. henryi: Same as in L. candidum, but more distinct, not 

 so fine, more irregular, and sometimes 2 or 3 small 

 sets added to original grain. 30 to 35 on larger 

 grains. 



L. auratum: Same as in L. candidum, but not so distinct. 

 Probably about 30 on larger grains. 



L. spedosum var. album: Same as in L. candidum, but 

 more distinct and sometimes 2 sets whose longi- 

 tudinal axes do not coincide with the longitudinal 

 axis of the grain. 42 to 44 on larger grains. 



L. martagon: Same as in L. candidum, but more distinct, 

 more irregular, and are continuous at the margin. 

 Sometimes 1 or 2 additional sets. 15 to 20 on 

 larger grains. 



L. superbum: Same as in L. candidum, but not so distinct, 



1 or 2 additional sets of lamella;. Number not de- 

 termined. 



L. tenuifolium: Same as in L. candidum, but not so dis- 

 tinct. About 20 to 25 on larger grains. 



L. pardalinum: Same as in L. candidum, but sometimes 

 continuous around the margin. 30 to 35 on larger 

 grains. 



L. puberulum: Same as in L. candidum, but somewhat 

 more distinct, more irregular, and may have 1 or 



2 smaller sets added to main set. About 36 on 

 larger grains. 



Size. 



L. candidum: From 8 to 70^, commonly 40/i. 



L. longiflorum var. giganleum: From 8 to 70ii, commonly 



40/i. 

 L. longiflorum var. eximium: From 5 to 72^, commonly 



46m. 

 L. parryi: From 4 to 60ju, commonly 32/ii. 

 L. rubellum: From 4 to 04/<, commonly 38^. 



