WATSON- -Plants of Bernalillo County 
25. LOASEAE. toasa FAMILy. 
Herbs with either stinging or jointed and rough- 
barbed hairs, no stipules, calyx-tube adnate to a 1-celled 
ovary; perfect, often showy flower, usually very num- 
erous stamens, and a single style. 
MENTZELIA. 
Stamens miany, inserted below the petals; style 9 
cleft at apex, seeds few to many on 3 parietal placentae. 
Annual and biennial erect herbs with stems becom- 
ing white and shining, alternate leaves, very adhesive 
by the barbed hairs; terminal, solitary or cymose-clus- 
tered, yellowish or white flowers; cylindrical or club- 
shaped calyx tube with a 5-parted persistent limb; 5 
regular, flat,spreading, deciduous petals; usually in- 
definite stamens. In the mountains. 
Seeds few or many, petals 5, not large, filaments all] 
filiform, - - - - (1) M. ALBICAULIS. 
Seeds numerous, winged, petals 10 often large and 
showy outer filaments petaloid, - (2) M. NuDa. 
1. m. aLtBicavis, Dougl. 
Slender, 3 to 12 in. or more high; leaves linear- 
lanceolate, pinnatifid with numerous narrow lobes, 
sessile, upper leaves broader; flowers mostly approxi- 
mate, near the ends of the branches; petals spatulate 
or obovate; capsules linear-clavate with many seeds 
which are tuberculate and irregularly angled. 
2. M. NubA, Torr and Gray. Rough, leaves lanceo- 
late, sessile, sinuately-toothed or pinnatifid, the sege- 
ments obtuse; flowers opening in the evening, yellow- 
ish-white, rather large, not bracteolate, capsule broad, 
oblong, 3-valved at the summit. 
26. CACTACEAE. cactus FAMILY. 
The leaves are small or wanting, but the stems are 
often flattened and are popularly considered leaves. 
Bundles of spines arise from the areolae which consti- 
tute the axils of the leaves. 
No proper leaves, spines never barbed, flowers and 
spynes on separate areolae, tube of flower long or least 
well-developed. 
Globose or oval, ovary naked, (1) mMAmILZaRIA. 
Oval or columnar, ovary covered with sepals, 
- - - hy Jase - - (2) cEREUS. 
Leaves small, subulate, early deciduous; flowers and 
spynes from the same areoae, spines barbed; tuba 
of flowers short, cup-shape,..  -.. (8) OPUNTIA. 
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