Adams — On the Germination of the Seeds of some Dicotyledons. 475 



C. segehim Linn. — Seeds (1910) planted on 18th April, 1911. On 23rd 



September, 1911, none had germinated. 

 Cniciis arvensis Hoffm. — Seeds (1910) planted on 12th July, 1911. On 28th 



October, 1911, none had germinated. 



Cotyledons spatulate, entire, 12 mm. by 5 mm. 

 C. laneeolatus Hoffm. — Seedlings obtained at Murrough of Wicklow on 13th 



May, 1910. 



Cotyledons obovate, tapering to the base, entire, obtuse, 



glabrous, 11-15 mm. by 4-71 mm. First leaf simple, obovate, hairy, 



with spiny margin. 

 C. pvatensis Willd.— Ten seeds (1910) planted on 5th October, 1910. On 



13th July, 1911, none had germinated, and more seeds were sown. On 



11th November, 1911, none had germinated. 

 Crepis paludosa Moench. — Seeds (1910) planted on 12th July, 1911. On 



28th October, 1911, none had germinated. 

 Erigeron acre Linn. — Seeds (1910) planted on 3rd October, 1910. On 23rd 



September, 1911, none had germinated. 

 Eupatoriuin cannabimun Linn. — Seeds (1910) planted on 12th July, 1911, 



On 28tli October, 1911, none had germinated. 

 Hieracium boreale Fries. — Seeds (1910) planted on 12tli July, 1911. On 



28th October, 1911, none had germinated. 

 Hyjoochoeris glabra Linn. — Seeds (1910) planted on 19th April, 1911. On 



13th May, 1911, several had germinated. 



Cotyledons narrowly spatulate, tapering to the base, entire, obtuse, 



glabrous, with evident midrib at tlie base, 11 mm. by 2|-3 mm. First 



leaf simple, hairy. 

 H. radicata Linn.— Seeds (1910) planted on 12th July, 1911. On 28th July, 



1911, several had germinated. 



Cotyledons oblong-obovate, tapering to the base, entire, obtuse, 



glabrous, 13 mm. by 3-4 mm. 

 ImUa crithmoides Linn. — Seeds (age uncertain) planted on 6th May, 1911. 



On 14th October, 1911, none hud germinated. 

 /. salicina Linn. — Seeds (1909 probably) planted on 6th May, 1911. On 



14th October, 1911, none liad germinated. 

 Lactuca muralis Gaertner. — Twenty seeds (1909 probably) planted on 17th 



October, 1910. On 23rd September, 1911, none had germinated. 

 Lapsana commimis Linn. — Seeds (1910) planted on 12th July, 1911. On 



16th September, 1911, several had germinated. Seedlings obtained in 



Co. Dublin on 24th May, 1911, and 11th July, 1911. 



Cotyledons petiolate, blade broadly elliptical to spatulate, entire, 



§CIENT. PROC. K.D.S., VOL. XHI., NO. XXXIII. 4 B 



