NETTLE FAMILY 



525 



3. Urtica californica Greene. Cali- 

 fornia or Coast Nettle. Fig. 1272. 



Urtica californica Greene, Pittonia 1: 281. 1889. 

 Urtica Ivallii californica Tepson, FI. W. Mid. Calif. 

 147. ■ 1901. 



Stem simple or branched from the base, 6-10 

 dm. high, hispid and finely (often sparsely) 

 strigose. Leaves broadly ovate, deeply cordate, 

 coarsely serrate, 7-10 cm. long or the lower 

 often 15 cm. long, short-pubescent beneath and 

 often gray, dark green above and nearly 

 glabrous; petioles 3-7 cm. long: stipules ob- 

 long, obtuse, 8-12 mm. long : flower clusters 

 simple or paniculately branched, mostly exceed- 

 ing the petioles ; achene ovate, puncticulate, 

 about equalling the inner sepals. 



Low ground near tlie coast, Transition Zone; 

 Marin to San Mateo Counties, California. June- 

 Sept. Type locality: Point Pietras, San Mateo 

 County. 



4. Urtica lyallii S. Wats. 

 Lyall's Nettle. Fig. 1273. 



Urtica lyallii S. Wats Proc. Am. Acad. 10: 281. 1875. 



Stem branching from the base, erect, 1-2 m. 

 high, sparsely bristly or entirely glabrous. Leaves 

 3-15 cm. long, ovate or shallowly cordate, thin, 

 coarsely toothed, with an entire elongate acumina- 

 tion at apex, green and nearly glabrous or mi- 

 nutely pubescent: petioles usually about one-third 

 the length of the blade ; stipules oblong, obtuse, 

 about 1 cm. long : staminate flower clusters panicu- 

 late, well exceeding the petioles ; the pistillate un- 

 branched, scarcely exceeding the petioles ; achene 

 broadly ovate ; smooth, equalling the inner sepals. 



Low ground, Canadian and Transition Zones; Alaska 

 south to the Coastal region of Oregon. May-Sept. Type 

 locality: Vancouver Island. 



5. Urtica iirens L. Small or Dwarf 

 Nettle. Fig. 1274. 



Urtica urens L. Sp. PI. 984. 1753. 



Erect, annual, stem branching from the 

 base or sometimes simple, 15-50 cm. high, 

 stinging bristly. Leaves ovate or oblong- 

 ovate, thin, glabrous or nearly so, 3-5- 

 nerved, deeply and sometimes doubly ser- 

 rate, 1-4 cm. long ; on slender petioles of 

 about the same length; stipules 4 mm. long; 

 flower clusters rather dense, mostly shorter 

 than the petioles ; flowers androgynous, 

 mainly pistillate, both kinds mixed in the 

 same clusters ; fruiting calj-x with hispid- 

 ciliate margins; achene 2 mm. long. 



Tn waste places, and a garden and orchard 

 weed. Naturalized from Europe and widely dis- 

 tributed over North .America. 



