XXXV. UMBELLIFEIUE. 177 



.,/ Fruit globular, not separating into two . . . 

 TO \ Fruit separating into 2 small globular carpels . 



( Fruit of 2 little, globular, bladder-like lobes or carpela 

 36 < Fruit nearly globular, or broader than long . 



wly globular 

 Did, or longei 



( Fruit ovoid, or longer than broad . 



66. CoRtANDRUM. 

 . 7. SISON. 



34. PHTSOSPKRMUM. 

 . 37 

 41 

 Partial involucre of several bracts . 



No involucres 40 



Flowers of a yellowish green. Ribs of the fruit acute, almost winged 1!>. SILAUS. 

 Flowers white. Bibs of the carpels obtuse, or crisped, or not prominent . 39 

 Calyx-teeth appearing above the fruit. Leaf-segments narrow . . 5. ClCUTA. 

 Calyx-teeth not conspicuous. Leaf-segments numerous, small . 33. CONIUJL 

 Stem erect, not much branched. Leaves pinnately divided, with ovate, 



lanceolate, or linear segments 12. PIMPINELLA. 



Stem short, with spreading stiff branches. Leaves ternately divided, with 



subulate segments 8. TRINIA. 



( Leaf-segments divided Into numerous subulate lobes, not above 2 lines long, 

 41-, In opposite clusters, appearing whorled along the common stalk . .42 



(Leaf-segments oblong-lanceolate or linear, and flat 43 



/ Common stalk of the leaf simple. Fruit not above 2 lines long. 

 42 ^ 10. CARUM vertMOatum. 



( Common stalk branched. Fruit 3 or 4 lines long .... 20. MEUM. 



Rootstock a globular tuber 44 



Rootstock or root not tuberous 45 



Styles closely reflected on the fruit. Ribs of the fruit prominent Vittas 



single 10. CARUM Bulbocastanum. 



Styles erect Ribs of the fruit scarcely visible. Vittas several to each 



interstice 29. CONOPODIUM. 



Umbels of 3 to 5 very unequal rays 10. CARUM stgetum. 



Umbels of 7 to 10 rather unequal rays. Calyx-teeth not conspicuous. 



10. CARUM Cam'. 

 Umbels of 10 to 20 rays. Calyx-teeth prominent . . 14. (ENANTHE. 



Fruit 10 lines to above an inch long 47 



Fruit not above half an inch long 48 



Fruit thick, with prominent angles or ribs the whole length . 28. MYRRHIS. 

 Fruit slightly ribbed at the base, with a long smooth beak . 27. SCANDIX. 



Fruits mostly sessile or nearly so 14. (ENANTHR. 



Fruits all pedicellate 30. CH<EROPHYLLUM. 



Besides the species here described, Ammi majus, a common Continental 

 roadside plant, with erect branching stems, finely cut leaves, a small 

 fruit like that of Apium, but with an involucre of a few slender, pinnate 

 bracts, like the Carrot, has established itself on the banks of the Severn, 

 near Gloucester. [Very lately the Milk Parsley of northern and middle 

 Kurope, Sclinv/m caruifolium, Linn., has been found in damp woods in 

 North Lincoln and Cambridge, but it is extremely rare and possibly not 

 indigenous ; it is closely allied to the Lovage, but the leaflets are narrow 

 and the seed convex on both surfaces.] 



I. HYDROCOTYLE. PENNY-WORT. 



Herbs, mostly aquatic, with leaves often peltate. Flowers in a small 

 simple head or umbel, or in 2 or more whorls, one above the other. 

 Petals ovate, valvate in the bud in the British species, but not in all 

 exotic ones. Fruit laterally compressed, the carpels flat, nearly orbicular, 

 placed edge to edge, with one prominent rib on each side, and without 

 any prominent calycine teeth. 



A rather large genus, spread over the greater part of the globe, and, 

 notwithstanding some rather anomalous South African and Australian 

 species, known as well by its foliage and inflorescence as by its fruit. 



1. H. vulgaris, Linn. (fig. 398). Marsh Penny-wort, White-rot. The 

 perennial slender stem creeps along the wet mud, or even floats in 

 water, rooting at every node, an* 1 emitting from the same point small 



V 



43 



