252 
VERBEHACE J3. 
* Verbena bonariensis, Linn. ; Schauer in DC. Prod. xi. 541, a native 
of South Brazil and Buenos Ayres, is naturalised plentifully in Mauritius 
in fields and by roadsides about Moka, Pamplemousses, etc. It is an 
erect perennial herb, 2-3 feet high, with rough square stems, distant 
lanceolate sessile sharply serrated leaves 3-4 in. long, flowers in 
very numerous short spikes arranged in a deltoid panicle, small 
bracts, a pilose 5-ribbed tubular hairy calyx £ in. long with 5 linear 
teeth, a minute red-purple corolla with a long cylindrical tube and a 
short nearly regular limb, didynamous included stamens and fruit 
which splits into 4 cylindrical brown pyrenes included, in the persistent 
calyx-tube. Verveine sauvage. 
2. LIPPIA, Linn. 
Calyx membranous, campanulate ; segments 4. Corolla with a 
cylindrical tube and obscurely bilabiate limb, with 5 rounded lobes. 
Stamens 4, didynamous. Ovary 2-celled, globose ; cells 1-ovulate; style 
simple; stigma capitate. Fruit ovoid, dry, separating into 2 pyrenes. 
— Herbs or shrubs, with simple opposite leaves and minute flowers 
arranged in axillary spikes or capitula. Distrib. Species 80, all the 
rest American. 
1. L. nodiflora, Rich.; Schauer in DC. Prod, x i. 585. A wide- 
trailing perennial herb, rooting at the joints and more or less clothed 
with obscure adpressed short whitish hairs. Leaves nearly sessile, 
obovate or oblanceolate, obtuse, sharply toothed in the upper half, 
cuneate-spathulate in the lower. Peduncles axillary, ascending, longer 
than the leaves. Heads J in. thick, at first globose, afterwards oblong ; 
bracts small, deltoid, the outer largest. Calyx in. long? hyaline, with 
two purplish ciliated keels ; teeth deltoid. Corolla J in. long, the 
obscurely bilabiate limb y^ in. across. Fruit ovoid, included in 
the calyx. Zapania nodiflora, Pers. ; Bojer , Port. Maur. 254 
Mauritius and Seychelles, frequent on grassy shores. Cosmopolitan in tropical 
and warm- temperate regions. 
3. NESOGENES, A. DC. 
Calyx-tube oblong; teeth 5, large, rather unequal. Corolla-tube 
funnel-shaped ; lobes 5, round, nearly equal. Stamens 4, obscurely 
didynamous, shorter than the corolla; filaments short. Ovary obovoid, 
2-celled ; ovules solitary in the cells ; style simple ; stigma capitate. 
Fruit a small dry drupe, enclosed in the persistent calyx-tube. — Herbs, 
or shrubs, with small opposite leaves and flowers solitary or fascicled 
in their axils. Distrib. Species 2, the other one Polynesian. 
1. N. decumbens, Balf. fil. A diffuse perennial herb, much- 
branched at the crown of the root, with trailing simple or little branched 
finely downy slender wiry stems 1-2 ft. long. Leaves short-petioled, 
