34 



ON SEEDLINGS 



No. 1. With a glabrous petiole 3'5 cm. long, -75 mm. thick, and 

 a ternatisect lamina 1 cm. long and as wide, obscurely nerved, 

 glabrous. 



No. 2. Ternatisect. Both are 

 frequently much simpler than in 

 the accompanying sketch. 



No. 3. Pinnately multisect ; 

 pinnae cuneately palmate, bi- 

 tri-sect with subulate or linear- 

 subulate, acute or minutely apicu- 

 late segments. 



Scandix Pecten-Veneris, L. 



Primary root long, tapering 

 downwards, with slender, second- 

 ary rootlets. 



Hypocotyl tapering insensibly 

 into the root. 



Cotyledons linear, obtuse, en- 

 tire, tipped with a mucro, tapering 

 gradually into the petiole, gla- 

 brous, shallowly grooved above, 

 showing a distinct midrib on the 

 under side, but no other discern- 

 ible venation when fresh, but after 

 a time slender alternate nerves ; 

 'I 6'4-6'8 cm. long, including the 



( petiole, T5-2 mm. wide about the 



FIG. 412. Ptychotis Ajouxin. Nat. size, middle of the lamina which tapers 



to both ends, but more especially 



the lower ; petiole shallowly grooved above, dilated and connate at 

 the base, forming a short sheath or cup around the plumule, and 

 split a little more deeply on one side. 



Stem herbaceous, erect, annual, produced only when about to 

 flower ; primary internodes undeveloped. 



Leaves pinnately multisect, radical and cauline, alternate, ex- 

 stipulate, petiolate, minutely pubescent or scaberulous at the edges 

 of the segments, otherwise glabrous, deep green above, paler beneath, 

 with a multifid branching venation corresponding to the segments 

 into each of which a nerve runs ; primary nerves opposite, second- 

 ary and higher ones alternate ; petioles semiterete, channelled 

 above, tapering somewhat upwards, dilated and sheathing at the 

 base, minutely pubescent at the margins of the groove. 



