XXXIII. UMBELLIFER.ZE. 
85 
Aromatic herbs. Umbels terminal. Carpels with 3-5 equal, nar- 
row wings 8. Ligusticum. 
Herbs or climbing shrubs. Leaves simple or compound. Carpels 
with 2 broad, lateral wings 9. Angelica. 
Herbs. Leaves compound. Carpels prickly 10. Daucus. 
1. HYDROCOTYLE, Linn. 
Herbs, with long, slender, creeping, often tufted stems. Leaves alternate, 
rarely fascicled, reniform or orbicular, petioles slender, dilated and membra- 
nous at the base. Umbels or heads small, simple. Involucral leaves few or 
0. Flowers very minute. — -Calyx-limb obsolete. Petals valvate, flat or in- 
curved, but tips not inflexed. Fruit orbicular, much laterally flattened. Car- 
pels placed edge to edge, each with one or few (sometimes obsolete) ribs on 
each face. 
A rather extensive genus, found in all moist temperate regions. Some of the species are 
very widely diffused; the New Zealand ones numbered 8, 9, 10, are not satisfactorily distin- 
guished. 
Umbels on long peduncles. Fruits on very slender pedicels . . 1. H. elongate. i. 
Umbels sessile in the axils of the leaves. Fruits sessile . . . 2. II. americana. 
Umbels more or less peduncled. Fruits nearly sessile, capitate. 
Leaves tufted. Involucre 2-leaved. Fruits 2 or 3, large . . 3. H. asiatica. 
Leaves 3-6-partite. Peduncles slender. Umbels 3-6-flowered 4. H. muscosa. 
Leaves 5-7 -partite. Peduncles slender. Umbels 40-50-flowered 5. H. dissecta. 
Leaves more or less deeply 5-7-lobed. Peduncles short, slender. 
Umbels 3-5-flowered. Fruit hispid 6. II. heteromeria. 
Peduncles long, slender. Umbels 3-5-fiowered. Carpels very 
flat, broadly winged I. II. pterocarpa. 
Lobes very obscure, obscurely crenate. Peduncles short, slen- 
der. Umbels loosely 5-10-flowered 8. II. novce-Zelandice. 
Hairy or tomentose. Lobes distinct, toothed. Umbels densely 
many-flowered 9. H. moschata. 
Nearly glabrous, small. Peduncles slender. Umbels many- 
flowered, very small 10. H. microphylla. 
1. H. elongata, A. Cunn.; — FI. N. Z. i. 84. Slender, very pilose or 
almost glabrous ; stems 8-10 in. long. Leaves 1 in. diam,, orbicular- 
reniform, deeply 5-7-lobed, lobes sharply toothed; petioles 1-2 in. long, 
slender ; stipules small. Peduncles very slender, longer than the leaves. 
Umbels 20-50-flowered. Flowers very minute, on slender strict pedicels, 
yU— i in. long. Fruit very small. Carpels with 1 rib on each face, brown. 
"Wet places in the Northern and Middle Islands, not uncommon. Very near indeed 
to the Chilian H. geranioides, but that is a much more robust plant. 
2. H. americana, Linn.; — -FI. N. Z. i, 82. Perfectly glabrous, slen- 
der, creeping, shining. Leaves in. diam., orbicular-reniform, 5-7-lobed, 
lobes shallow crenate ; stipules small. Umbels very small, 3-5-flowered, 
sessile in the axils of the leaves. Flowers sessile. Fruit minute, pale-yel- 
lowish. Carpels with 1 rib on each face, glabrous, one often seedless and 
hispid. 
Northern Island : marshy ground, not unfrequent. A Canadian, United States, and 
Brazilian plant, not hitherto found elsewhere in the Old World. The American specimens 
have sometimes pedicelled flowers. 
