Adams — On the Germination of the Seeds of some Dicotyledons. 497 



Conium maculatum Liuo. — Seeds (1910) planted on 18th April, 1911. On 

 27th May, 1911, several had germinated, and had formed the first leaf. 

 Seedlings found at Murrougli of Wicklow on 13th May, 1910. 



Cotyledons with long petiole, blade lanceolate, entire, glabrous, 

 obtuse, with prominent veins. Petiole 7-15 mm. long, blade 6-12 mm. 

 by 2-4J mm. First leaf ternately or biternately divided. 

 Critlvnum maritimum Linn. — Twenty-five seeds (1909) planted on 18th 



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

 Dattcus Carota Linn. Seeds (1910) planted on 12th July, 1911. On 28th 

 July, 1911, some had germinated. On 16th September, 1911, many had 

 germinated. Seedlings found at Murrougli of Wicklow on 13th May, 

 1910. 



Cotyledons linear-oblong, tapering to the base, pointed, entire, 

 glabrous, 16-24 mm. by 1-2 mm. First leaf divided, liairy. 

 Eryngiuin maritimum Unn. — Seeds (1910) planted on 18th April, 1911. Ou 

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

 28th October, 1911, none had germinated. Seedlings found at Malahide 

 on 24th May, 1912. 



Cotyledons petiolate, slightly connate at the base, blade oblong- 

 lanceolate, subacute, entire, somewhat fleshy, but with evident midrib and 

 lateral veins. Petiole 5 mm. long, blade 15 mm. by 4 mm. First leaf 

 petiolate, simple, blade subrotund, serrato-spinose. 

 Haloscias scoticwn Fries. — Twenty seed's (1909) planted on 17th October, 



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



Heradeum *Si23/wJ((r(////'M/H Linn.-—Seeds(1910) planted on 12th July, 1911. On 

 28th October, 1911, none had germinated. On 5th April, 1912, many 

 had germinated. Seedlings found at Dalkey on 6th Maj', 1910. 



Cotyledons petiolate, blade oblong to subelliptieal, obtuse, entire, 

 glabrous, with three veins proceeding from the base. Petiole 6-10 mm. 

 long, blade 6^8 mm. by 2-3imm. First leaf simple, petiolate, reniform 

 to cordate, hairy, with serrate or crenate margin. 



Hydrocotyle vuloaris Linn. — Seeds (age uncertain) planted on 15th July, 



1911. On 28th October, 1911, none had germinated. 



Oenanthe aquatica Poir. — Seeds (age uncertain) planted on 14th July, 1911. 

 On 16th September, 1911, two had germinated. On 28th October, 1911, 

 no more had germinated. 



Cotyledons petiolate, narrowly lanceolate, entire, glabrous, pointed. 

 Petiole 3-5 mm. long, blade 8-10 mm. by 2 mm. First leaf three-lobed. 

 0. crocata Linn. — Seedlings found in Co. Wicklow on 19th July, 1910. 



Cotyledons oblanceolate, obtuse, glabrous, with entire margin, 

 tapering gradually to the base, 29 mm. by 3 mm. 



