1180 LAMIACEAE 
1. P. frutescens (L.) Britton. Stem 2-6 
roadsides, various provinces, Fla. 
Mo. and Con Nat. of Asia.—Sum.— 
The bea especially when bruised, give 
off a strong o 
40. HYPTIS Jacq. Herbs or woody plants. Leaf-blades ein 
toothed. Flowers in often dense axillary cymes Calyx nearly regular, so 
times oblique, accrescent and ribbed or veiny E maturity. Corolla 2- es 
white to purple: lower lip 3-lobed, the middle lobe saccate.  [Mesosphaerum P. 
Br.]—About 300 species, mostly tropical American. 
Flowers borne in few remote peduncled involucrate heads: bracts foliaceous. 
I. RADIATAE. 
Poe eus in numerous axillary separated clusters or in 
ntiguous or approximate glomerules whicb thus form 
a od panicles : bracts minute. 
Po in unilateral cymules which are aggregated into 
hyrsus: mure ealyx persistent. II. SPICATAE. 
Flowers in so separated axillary clusters: mature calyx 
deciduou III. VERTICILLATAE. 
I. RAD 
Stem typically simple or branched at the ie doo to the top. 1. H.radiata. 
II. SPICATAE 
Calyx-lobes short-subulate, at maturity less than i$ as long as 
tube: terminal portion of the inflorescence LOT DOSE of 
elongate slender mee thyrsi, open. 2. H. mutabilis. 
Calyx-lobes setaceous-subulate, at maturity much more than 
as long as the tube: terminal portion n s inflorescence 
composed of short continuous thyrsi, comp 3. H. pectinata. 
VERTICILLATA 
Tall plant with virgate stems and very slender Da the o. 
fiower-clusters inconspicuously bracted. 4. H. verticillata. 
1. H. radiata Willd. Stem 2 m. tall or less, finely pubescent, simple or rarely 
branched: leaf-blades ovate to lanceolate or linear-lanceolate, 2-8 em. long or 
eross-ribbed at maturi 
laneeolate, short-hairy: 
long: nutlet ets oval, nearly 1 
Low pinelands, hamm 
marshes, Coastal Plain 
N. C.—(W. I.)—Spr M c or t all Mee $8. 
2. H. mutabilis (A. Rich.) Briq. Stem 2 
m. tall or less, pubescent with short crispe 
h and more or less murieate: leaf-blades 
Sere ovate 1toid, 
renifor 2-7 long or rarely m 
nds -serrate, broadly uis p nuns 
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