=A. Murrayanum= (Murray's).* _fl._ rosy purple, in large heads. _l._ narrow, longer than the stem. _h._ 1ft. North America. A good variety of _A. acuminatum_.
=A. mutabile= (changeable). _fl._ white, changing to rose, in many-flowered umbels. July. _l._ shorter than the stem, narrow, channelled. _h._ 12in. to 24in. North America, 1824.
=A. neapolitanum= (Neapolitan).* _fl._ white, with green stamens, numerous, in a loose umbel, on stems exceeding the leaves in length; pedicels much longer than the flowers. Early summer. _l._ two or three, sheathing the flower stem, strap-shaped, about 1in. across. _h._ 15in. to 18in. South Europe, 1823. Probably the most ornamental white-flowered species.
=A. nevadense= (Sierra Nevada). _fl._ white, or pale rose, about 1/2in. across, in several-flowered umbels. July. _l._ flat, rather longer than the stem, about 1/4in. wide. _h._ 3in. to 6in. Sierra Nevada and Utah, 1882.
=A. nigrum= (blackish).* _fl._ dull violet, or whitish, with a green vein, very numerous, in a large umbel. Summer. _l._ thick, broadly lanceolate, acute, ciliated, toothed at the edges, at first erect and glaucescent, afterwards green and spreading, much shorter than the stem. _h._ 2-1/2ft. to 3-1/4ft. South of Europe. Very vigorous and free flowering. SYN. _A. magicum_.
=A. paradoxum= (wonderful). _fl._ white, gracefully pendulous, borne on long footstalks springing from little nests of yellow bulbils. Spring. _l._ one or two, as long as the scape, linear-lanceolate, acute, keeled, striated, smooth, 1/4in. broad, drooping and recurved. _h._ 9in. to 14in. Siberia, 1823.
=A. pedemontanum= (Piedmont).* _fl._ rosy-purple, large, bell-shaped, in large, graceful drooping clusters. July. _l._ lanceolate, shorter than the stem. Piedmont, 1817. A neat little plant for rockwork, or warm border. One of the handsomest species grown.
=A. reticulatum= (netted). _fl._ varying from pink to white. Summer. _l._ narrow, or almost filiform, shorter than the stem. _h._ 9in. to 15in. North-West America, 1882. A rare species.
=A. r. attenuifolium= (attenuate-leaved).* This may be regarded as an extremely handsome white-flowered variety. North-West America.
=A. roseum= (rose-coloured).* _fl._ pale lilac-rose, large, in umbels of ten or twelve; stems round, rather longer than the leaves. Summer. _l._ strap-shaped, channelled, rolled inwards at the top, not hairy. _h._ 12in. to 16in. South Europe, 1752.
