92 EUCALYPTS CULTIVATED IN THE UNITED STATES. 
in verifying or correcting the identification. The descriptions that 
follow apply to adult trees only. 
ARTIFICIAL KEY TO SPECIES. 
Anthers broader than long, usually kidney-shaped, and opening by slits that 
when joined are nearly horseshoe-shaped __--.......-.-..-:..:----- Renantherex 
Valves completely inclosed: 
Lid hemispheric: 
Veins running slomertudimaliy.s ieee ae ee ek eee al 
Veins spreading from midrib: 
Leaves of adult trees mostly opposite’. °- 22.2222 .2202 222 3 
Leaves of adult trees alternate: 
Leaves obliquesipnoad: 22. a a ia Sa eee eee ee 9 
Leaves not oblique, narrow: 
Leaves equally green above and below.......--..-- 2,12 
heaves palerbeneath seemeer  a ke Se eee 8 
Lid not hemispheric: 
Leaves equally green above and below: ...-.......-...--------- 4,5 
eaves: paler beneath: 22 2 se See oe ae eee ee eee Ow 
Valves partly exserted: 
Lid hemispheric: 
Leaves equally green above and below: 
Bruits semiovater: (22 eee eyed OS Tie k ey Dee a pean eee tee 13 
Fruits urn-shapedhas oss hoe os rye Se ee oe ee ee 16 
Leaves paler beneath: 5 Ses are ee ee a ee eee 14 
Lid: not:shemisplerie’ 25s os ee ett eee a ee ee ee en 15 
Valves completely exserted: 
Lid hemisphere sss re 5 re Te ene ne Sn eee oe ee a 10 
Lidsharp-pointed Aa) .ttsie ole 22 ee oe Be a ae ee ree 11 
Anthers not or hardly broader than long, opening by two pores -.-.----- Porantherex 
Valves deeply inclosed: 
Leaves equally green above and below...-.-----.------- set ak ne ET 23 
Iheaves paler beneath yizcr = soar aoc eect ae, ie ecg ae 17 
Valves completely but not deeply inclosed: 
Leaves ofadult trees broade® 22 \r2 2 ae ee eee ee te eee 21, 22 
Leaves of adult trees elongated: 
Umbels panicuilatede: sco) 7h as ea ears eye ee Ce a eae 23 
Umbels solitary: 
Flowers. threesig- 2226 eres mee ta ts Seen ene fea 2 oe eee 18 
Hlowers nob 1st reese. eee ick NE AR een ee 19, 20 
Umbels solitary or racemose. 22 2s20 3s. 2. = Soe ae eee 24 
Valves barely inclosed!s.2=. 2% Sate eee Se ee ee eee 25 
Anthers as long as or longer than broad, opening by nearly parallel slits .....---.-- 
Parallelantherex. 
Valves completely inclosed: 
Umbels solitary: 
Leaves equally green above and below: 
Leaves opposite /.\-4 42% = es er me Wee arcane 2 ce Seeenrenaen 42 
Leaves alternate: 
Flowers mostlyan) threess= sss 4-92 eee = == eee 42, 62 
Flowers 3 to 8: 
Calyx angled 2150 Rae Me acon 2 ome Se A ae eee 62 
Calyxmotdistinetly angled? es. Ses ae eee eae 32, 1 
