6 
The Irish Naturalist, 
January, 
Lowest leaves, if fine cut, usually larger (in general outline) 
than the upper leaves. Leaflets up to eleven in number, 
and usually cut into long, acute, linear segments, very 
rarely into capillary segments. 
Middle leaves usually show a gradual progress from the 
form of the upper leaflets to that of the lowest leaflets, 
though this progress is not always regular. 
Ocreae of leaflets sometimes well marked and abrupt ; 
sometimes slighter, and formed by gradual expansion from 
the petiole. 
Petiole long ; longer or shorter than ' blade ' of leaf, but 
always well marked. 
Sometimes the leaflets are all similar throughout the 
plant, but frequently there is a good gradation from the 
broad form at top to the pinnatifid or pinnate form of leaflet 
on the lowest leaves. Leaflets on a branch are usually finer 
cut than those of the leaf from the axil of which the branch 
springs, but not always. 
The plant is singularly sparse in flowers ; as compared 
with the supposed parents, the umbels are few to a stem. 
Umbels opposite leaves ; long -stalked ; pedicel nearly 
always longer than rays, generally much longer. 
Invohicral bracts rare, minute. I have never seen more 
than one on an umbel. 
Umbel rays almost always 2-3, rarely i, rarely 4. 
Umbellules many -flowered (up to 12). 
Petals broadly ovate, with a broadish point, very small, 
white. 
Bracts of umbellule many (up to 6), very unequal. 
Styles (of flower and undeveloped fruit), rather variable, 
even on one plant ; always intermediate in length between 
those of the ' parents,' but, as far as proportion goes, not 
varying very much more than that of inundatum. See, 
however, note below on the Llandderfel plant in Herb. 
Druce. 
Ripe fruit, not seen on any plant. One specimen (Maghery, 
Co. Armagh, in Herb. Praeger) shows one fruit beginning 
to form on one umbel, but it had not developed when 
gathered, and no details are possible. It looks nearer to 
