04 Colorado Agricultural College 
27. MINT FAMILY ' 
(Labiatae B. Juss., Lamiaceae Lindl.) 
Fruit of 4 seed-like nutlets or achenes ; nutlets 1-seeded, 
smooth or rough ; endosperm usually absent or, if present, fleshy ; 
emimyo straight. 
Ivey to Genera 
Seeds 3-aiigled. truncate . ^ i 
Seeds with a distinct band or margin around the edge I' Tion rus 
Seeds without a band or margin around the edge z . .Leonurui, 
Seeds not 3-angled, not truncate 
Seeds oval in outline . 
Seeds with 2 flat faces meeting in a ridge throughout their length 
Seeds pointed at one end Salvia 
Seeds rounded at each end r 
Seeds compressed, one end marked with two white dots 5. .Nepeta 
Seeds circular in outline, marked with a network of ridges G..Teucrmm 
1. Water Horehound, Bugle Weed 
{Lj/copus (Tourn.) L.) 
Nutlets with thickened margins, usually 3-angled, smooth, mostly truncate 
(ending abruptly as though cut off transversely) 
at the top, narrower at the base, 
fe'l '"raf Cut-leaved Water Horehound (Lycopus 
Q,mericanus Muhl.) (Fig. 118). Seeds buck- 
^ thorn-brown to mummy-brown in color, obscurely 
Tangled, truncate, margins thick, wide, and 
Fig. 118. Cut -leaved usuall.v distinct; seeds 1-1.5 mm. long, .C.-1,:i 
Water Horehound (Lveopus turn. wide, 
americanus). A. Bottom 
view. B. 'Lop view, x 15. 
2. Motherwort 
(Lconurus L.) 
Nutlets 3-angled, smooth, truncate at the top, 
narrower at the base. 
Common Motherwort (Lconurus cardiaca L.) 
(Fig. 119).— Seeds buffy-brown to clove-brown in 
color, distinctly 3-angled and 3-sided, truncate, 
hairy at the top (truncate end), l.:i-l.s mm. long, ^ common 
1 mm. wide, in widest part. Motherwort (Leonurus 
:;ardiaca). A. Bottom 
view. B. Top view. 
X 13. 
at 
Nutlets oval 
the other. 
ill outline 
^ Self-heal, Heal-all 
{Prunella L.) 
smooth, rounded at the broad extremity, pointed 
