COULTER AND ROSE—NORTH AMERICAN UMBELLIFERAE. 123 
sarmentosa and californica, we have two others which are not easily disposed of, and 
may indicate the need of further segregation. Thev are as follows: 
A form collected by G. R. Vasey (303, in 1889) in Washington has the open foliage 
of sarmentosa and the leaflets of californica in outline, but very thin in texture. It 
seems impossible to associate it with sarmentosa, it is entirely apart from the range 
of californica, and its leaf texture suggests neither. 
A form collected by Jepson at Jarvis Landing, Alameda County, Cal., June 19, 1897, 
is still more puzzling. It has the compact foliage and leaflet outline of californica, but 
the leaflets are smaller, thicker, and strongly reticulate, and the involucels are of 
very conspicuous bractlets exceeding the flowers and fruit. 
For introduced species see page 254. 
38. LILAEOPSIS Greene, Pittonia 2: 192. 1891. [Sept.] 
Crantzia Nutt. Gen. 1: 177. 1818, not of Scopoli (1777). 
Hallomuellera Kuntze, Rev. Gen. Pl. 1: 267. 1891. [Nov.] 
Calyx teeth small. Fruit globose, slightly flattened laterally, gla- 
brous. Carpel with filiform dorsal and intermediate ribs; laterals very 
thick and corky next the commissure; 
each with a small group of strengthening 
cells. = Stylopodium depressed. — Oil 
tubes solitary in the intervals, 2 on the 
commissural side. Seed terete. 
Small glabrous perennials, creeping 
and rooting in the mud, with leaves re- 
duced to hollow cylindrical or awl-shaped 
petioles (jointed by transverse partitions), 
minute involucral bracts, and simple few-flowered umbels of white 
flowers. 
Type species, //ydrocotyle lineata Michx. Fl. Bor. Am. 1: 162. 1803. 
A genus of world-wide distribution, generally treated as monotypic, 
but we recognize the 4 following North American species: 
Fruit with lateral ribs prominently corky thickened, much more conspicuous than 
the dorsal ones, which are not at all corky, 
Peduncles longer than the leaves ......----------------------+---- 1. 1. lineata. 
Peduncles much shorter than the leaves ........-------------- 2. L. occidentalis. 
Fruit with all the ribs corky thickened, the laterals more prominent; peduncles 
much shorter than the leaves. 
Leaves broadening above into a spatulate or oblong blade; dorsal ribs sharply 
acute 3.°L. carolinensis. 
ee ee eee ee 
Fig. 36.—Lilaeopsis lineata. 
1. Lilaeopsis lineata (Michx.) Greene, Pittonia 2: 192. 1891. Fie. 36. 
Hydrocotyle lineata Michx. Fl. Bor. Am, 1: 162. 1803. 
Crantzia lineata Nutt. Gen. 1: 178. 1818. 
Hallomuellera lineata Kuntze, Rev. Gen. Pl. 1: 267. 1891. 
Leaves short, 2 to 5 em. long, linear-spatulate; peduncles longer than 
the leaves, 3 to 7 cm. long. 
Type locality, ‘‘in inundatis Carolinae inferioris.” 
Along the Atlantic and Gulf coasts from Massachusetts to Mississippi. 
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