110 MANN, 



ovary ; its limb reduced to a mere border, or to 5 small teeth. Petals 

 5, valvate in aestivation, inserted, with the 5 stamens, on a disk which 

 crowns the ovary ; their points inflexed. Styles 2 ; their bases often 

 united and thickened, forming a stylopodium. Fruit dry, a cremocdrp, 

 consisting of 2 united carpels, at maturity separable from each other, 

 and often from a slender axis (carpophore), into two achenia, or 'ineri- 

 carps : the face by which these cohere is called the commissure : they 

 are marked with a definite number of ribs (juga), which are sometimes 

 produced into wings :' the intervening spaces (intervals), as well as 

 the commissure, sometimes contain canals or receptacles of volatile oil, 

 called vittce. Embryo minute, in hard or corneous albumen. 



Aquatic herb, with peltate or shield-shaped leaves, 1. HYDROCOTYLE. 



Land herbs. 



Bristles of the fruit hooked; leaves palmately-lobed or parted, 2. SANICULA. 



Bristles of the fruit barbed; leaves twice pinnate, .... 4. DAUCUS. 



Fruit not bristly, 3. FCENICULUM. 



1. HYDROCOTYLE Tourn. [Poe, Pohi.] 



Calyx-teeth obsolete. Fruit flattened laterally, orbicular or shield- 

 shaped, the carpels 5-ribbed, two of the ribs enlarged and often form- 

 ing a thickened margin: oil tubes none. Low and smooth marsh 

 perennials, with slender stems creeping or rooting in the mud, and 

 round shield-shaped or kidney-form leaves. Flowers small, white, in 

 simple umbels or clusters, which are either single or proliferous. 



A considerable genus, dispersed over the greater part of the globe. 



1. H. INTERRUPTA Muhli. (Enum. No. 149.) Leaves peltate in the 

 middle, orbicular crenate ; peduncles about the length of the leaves, 

 bearing clusters of few and sessile flowers interruptedly along its 

 length ; fruit broader than long, notched at the base. 



In marshy and wet places; frequent near two ponds. Also native of North America. 



, 2. SANICULA. 



Calyx teeth manifest, persistent. Fruit globular; the carpels 

 not separating spontaneously, ribless, thickly clothed with hooked 

 prickles, each with 5 oil-tubes. Perennial herbs, with palmately- 

 lobed or parted leaves, those from the root long petioled. Umbels 

 irregular or compound, the flowers capitate in the umbellets, perfect, 

 and with staminate ones intermixed. Involucre and iuvolucels few- 

 leaved. 



A small genus, mostly found in North Temperate regions. 



1. S. SANDWICENSIS Gray. . (Enum. No. 150.) Root fusiform, (J'-10' 

 long. Stem l-2 high, angular glabrous, as is the whole plant. 

 Leaves roundish, 2' in diameter, . palmately 3 - 5-parted or almost 



