538 UMBELLIFERAE. (Vou. II. 
1. Ptilimnium capillaceum (Michx.) Hollick. Mock Bishop-weed. 
(Fig. 2699.) 
: Ammi majus Walt. Fl. Car. 113. 1788. NotL. 
A, capillaceum Michx. F1, Bor.Am, 1: 164. 1803. 
D. capillacea DC. Mem. Omb. 38. _ 1829. 
Ptilimnium capillaceum Hollick, Trans. N. Y. 
Acad. 13:20. 1893. 
Slender, 1°-2° high, the branches ascend- 
ing or sometimes divaricate. Leaves finely 
dissected into filiform segments, the upper 
sessile, the lower more or less petioled; in- 
volucral bracts or some of them pinnately 
parted; involucels of several linear bracts; 
umbels 2/—4 broad, 5-20-rayed, the rays 1/- 
2’ long; pedicels 2’/-8’’ long; fruit ovate, 
acute, 1/7-114’’ long. 
In wet soil, especially brackish meadows, 
along the coast, Massachusetts to Florida, ex- 
tending west to Texas. June-Oct. Called also 
Herb William, Wood-nep, Bole- or Bull-wort. 
Nuttall’s Mock Bishop-weed. (Fig. 2700.) 
Peucedanum verticillatum Raf. Fl. Ludov. 81. 1817? 
Discopleura Nuttallit DC. Mem. Omb. 38. 1829. 
Discopleura capillacea var. Nuttallii Coult. & Rose, 
Bot. Gaz. 12: 292. _ 1887. 
Ptilimnium Nuttallii Britton, Mem. Torr, Club, 5: 
244. 1894. 
Similar to the preceding species, but generally 
stouter, 2°-3° high, the branches nearly erect. 
Umbels 7-25-rayed; bracts of the involucre lin- 
ear, entire, short, those of the involucels minute; 
fruit nearly orbicular, obtusish, about %’’ long. 
In swamps, Illinois to Arkansas, Louisiana and 
Texas. May-Sept. 
40. BERULA Hoffm.; Bess. Enum. Pl. Volh. 44. 1821. 
A glabrous aquatic or marsh perennial, with pinnate leaves, serrate or sometimes incised 
leaf-segments, and terminal compound umbels of white flowers. Involucre and involucels 
of several narrow bracts. Calyx-teeth very small. Stylopodium conic; styles short. Fruit 
subglobose, slightly flattened laterally, glabrous, the ribs very slender, the pericarp thick 
and corky; oil-tubes numerous and close together along the inner side of the pericarp. Seed- 
face flat. [Latin name of the water cress. ] 
A monotypic genus of the north temperate zone. 
1. Berula erécta (Huds. ) Coville. Cut- 
leaved Water Parsnip. (Fig. 2701.) 
Stum erectum Huds, Fl. Angl. 103. 1762. 
Stum angustifolium U,. Sp. Pl. Ed. 2, 1872. _ 1763. 
Berula angustifolia Mert. & Koch, Deutsch. Flora, 
2: 433. 1826. 
B. erecta Coville, Contr. Nat. Herb. 4: 115. 1893. 
Erect, rather stout, much branched, 6’—3° high. 
Leaflets 7-19, ovate, oval, or linear-oblong, 
deeply serrate, laciniate, or lobed, 6’’-18’’ long, 
2//-5// wide, those of the upper leaves com- 
monly more laciniate than those of the lower; 
umbels numerous, short-peduncled, 10-20 rayed; 
rays 14/-214’ long in fruit; pedicels 1 %4’/-3’’ long; 
fruit less than 1/’ long, nearly orbicular, some- 
what cordate at the base, the ribs inconspicuous. 
In swamps and streams, southern Ontario to 
British Columbia, south to Massachusetts (?) Illi- 
nois, Nebraska; in the Rocky Mountains to New 
Mexico and to California. Also in Europe and 
Asia. Called also Lesser or Narrow-leaved Water- 
Parsnip. July-Sept. 
