188 BOTANICAL GAZETTE [SEPTEMBER 
Fic. 3. The same, in the resting state after the first period of growh 
Fig 4. Small specimen of Arisaema Dracontium in April, forming the 
first set of roots; 7%, thin roots of the first set ; sc, scars from the rootsofthe — 
preceding years. ee 
Fic. 5. A similar specimen, in May, forming the second set of roots; r', 
thin roots of the Urst Serr", enick contractile roots of the second set. 
portions emptied in former years; dd, lateral bud; the shaded part of 
tuber is to be emptied this year. 
Fic. 7. Tuber of Mesadenia tuberosa, in May ; longitudinal section; 
roots formed in the present year; 72, roots formed in the preceding year. 
Fic. 8. Young descending specimen of LErythronium mesachoreum 
April, with the runner developed; 4, bulb; /, leaf-stalk; % roots; f, 3 
runner. . 
ie 
g. Young sterile descending a of Erythronium ne 
with its et of the five preceding year: 3 
Fig. 10. Tip of the runner of Rylan mesachoreum ,; cian A 
tudinal section; 4, new bulb. 5. ou 
Pia, tt. Becdiing of Aguilegia vulgaris, soon after germination; & 
hypocotyl; ¢, cotyledons ; 7, primary root. . 
FIG The same, at the end of the first period of growth; ae 
where the growing point is situated; 7, primary root; 7, lateral roots ®° 
down by the contraction of the main root. , 
FiG. 13. Lacinaria sguarrosa, subterranean part of a full-grown 
men in summer; ¢, tuber; 7, contractile root. : 
asi 
