atoll research bulletin no. 392 the flora of - Smithsonian Institution ...

Emilia sonchifolia (L.) DC. "purple sow thistle", "floras paintbrush"
syn. Cacalia sonchifolia L.
Recent introduction. Pantropical. Occasional. Erect, soft-stemmed, branching
annual herb, 10 to 40 cm tall, lower stems pubescent, upper ones nearly glabrous; leaves,
3 to 15 cm long and 5 to 7 cm wide, simple, alternate; lower leaves, deeply irregularly
lobed or dentate, subdeltoid to spoonshaped, clasping stem at the base; upper leaves,
smaller, lanceolate, toothed to subentire, sometimes purplish beneath on midrib and
bluish-green (glaucous) on blade; flower heads, 0.8 to 1 cm long and 2.5 to 6.5 mm
wide, few, cylindrical, on slender lax peduncles in loose, branching terminal clusters;
involucral bracts, about 8, cylindrical, fused, which split apart and reflex at maturity,
almost covering the flowers; ray-florets absent; disc-florets, 30 to 60 in number, 5-lobed,
white below, lavender to pink at the tips, tubular, just slightly longer than the involucre;
fruit, about 2.5 to 3 mm long, brown, prism-shaped, 5-ribbed achene, with a pappus of
numerous, silky white bristles, 6 to 8 mm long. Weed in waste places and as a pioneer in
recently mined areas. 5(115), 6, 7(22313), 8.
Gerbera jamesonii Bolus "Transvaal daisy", "gerbera" , "African Daisy"
Recent introduction. S. Africa. Rare. Hairy perennial herb, 30 to 35 cm high;
leaves, 15 to 30 cm long (blade about 213 as long as stem)), many, deeply lobed, feather-
fashion, woolly beneath, arranged in. a basal rosette; flowerheads, 7.5 to 10 cm in
diameter, attractive, daisy-like, pink, red, orange, yellow or cream-colored, solitary,
borne on the crest bare flower stalks, about 25 to 40 cm long; central disc-florets, many,
surrounded by 1 or 2 rows of narrow orange ray-florets; many single and double hybrid
forms exist. Planted ornamental. 5, 6, 7.
Gynura aurantiaca (Bl.) DC. "purple passion flower", "velvet plant"
Recent introduction. Java. Rare. Erect or semi-climbing, up to 75 cm; ovate,
deeply lobed or toothed, leaves, dark green, covered with thick, bright purple hairs,
giving the plant a velvety appearance; flowerheads, about 2.5 cm in diameter, like a
petal-less daisy; disc-florets orange. Ornamental pot plant. 6.
Synedrella nodiflora (L.) Gaertn.
syn. Verbesina nodzpora L.
Recent introduction. Trop. America. Occasional. Coarse, - -- erect
" synedrella" , "nodeweed"
to ascending,
branched Gnual herb, 10 to 75 cm high, often rooting at lower, decumbent-nodes;
leaves, 1.5 to 8 cm long and 1.5 to 5 cm wide, larger leaves usually at the top, simple,
opposite, ovate to elliptic, acute tip and cuneate base, subentire to crenate-serrate,
scabrous, 3-nerved from base,; petiole, about 1 to 1.5 cm long, winged, pubescent on