Adams — On the Germination of the Seeds of some Dicotyledons. 491 



Potentllla erecta Hampe. — Seedlings found at L. Bray, Co. Wicklow, on 7th 

 June, 1911. Cotyledons shortly petiolate, blade subrotund, entire, 

 obtuse, glabrous. Petiole 1-1 J mm. long, blade 2^3|^mm. by 2J-3 mm. 

 First leaf simple, serrate. 



P. reptam Linn.— Seeds (1910) planted on 12th July, 1911. On 28th October, 

 1911, none had germinated. 



P. sterilis Grarcke.— Seeds (1910) planted on 12th July, 1911. On 28th 

 October, 1911, none had germinated. 



Poterium Sanguisorha Linn. — Seeds (1910) planted on 14th July, 1911. On 

 8tli May, 1912, eight liad germinated. 



Pruniis Amygdalus Stokes. — Six seeds (age uncertain) planted on 15th March, 

 1911. On 22nd June, 1911, one had germinated, and was 6 inches above 

 ground. On 28th October, 1911, no more had germinated. Five seeds 

 were planted on 26th June, 1911. On 18th July, 1911, one had 

 germinated. On 14th October, 1911, no more had germinated. 



Twelve seeds were planted on 2ud April, 1912. On 6th July, 1912, 

 one had germinated. Cotyledons in all cases subterranean. 



P. domestica Linn. — Seeds (1911) of Greengage planted on 22nd July, 1911, 

 On 18th April, 1912, four had germiuated. 



Cotyledons come above ground and resemble those of P. spinosa. 



P. Persica Stokes. — Eight seeds (1911) planted on 7th October, 1911. On 

 18th April, 1912, one had germinated, and on 3rd June, 1912, another 

 had germinated. 



Cotyledons subterranean. 



P. serotina Ehrhart — Twenty seeds (1911) planted on 7th October, 1911. 

 On 18th April, 1912, five had germinated. 

 Cotyledons subterranean. 



P. spinosa Linn. — Ten seeds (1910) planted on 3rd October, 1910. On 2nd 

 April, 1912, one had germinated, and on 13th April, 1912, another had 

 germinated. Seeds (1910) freed from stone were planted on 26th April, 



1911. On 2nd April, 1912, one had germinated. On 10th October, 



1912, no more had germinated. 



Cotyledons fleshy, spatulate, shortly petiolate, entire, glabrous, 11 mm. 



by 5 mm. First leaf simple, serrate, stipulate. 

 Pi/rus Aria Ehrhart. — Seeds (1909 probably), planted on 6th May, 1911. 



On 8th June, 1912, none had germinated. 

 P. Aiicuparia Ehrhart. — Six seeds (1910) planted on 29th September, 1910. 



On 8th June, 1912, none had germinated. Seedlings obtained at Lough. 



Bray, Co. Wicklow, on 7th June, 1912. 



SCIKNT, PKOC. R.D.S., VOL. XHI., NO. XXXIH. 4 D 



