616 APPENDIX 
Spike-like inflorescences, flattened and 1-sided; plants of tide pools or estuaries. 
5. Zosteraceae 1: 93. 
caesar of heads, umbels, or if spikes these not flattened and 1-sided; plants of fresh 
r brackish water. 
Seyte 2-cleft, sometimes simple (achenes with 1 or more dry bracts); ve monoecious 
(most species emersed and persisiting in mud). . Sparganiacea 
Stigmas sessile, disk-like; flowers perfect. BE sredoniemnananit de 83 
Flowers in 08 leaf-axils. 
Leaves serrate or serrulate; nutlet ellipsoid, enclosed in a ire membranous coat. 
. Naiadaceae 1: 92. 
Leaves Herne nutlet obliquely oblong with a prominent bea, not enclosed in a membranous 
oat (Zannichellia). Pota sricvapeeombetiaa B83, 
Perianth in 2 series, the inner petaloid. 
Ovary inferior; inner perianth white. . Vallisneriaceae 1: 103 
superior; inner perianth yellow or blue . Ponterderiaceae 1: 349. 
Ovary 
Plants cs ga or semiaquatic with the stems partially eternict and the net persisting in mud as the water 
Trees up a 9-12 m. high. 
Leaves Rah and lobed; inflorescence in a large spathe; trunks ig 
eens caceae (Palmae) 1: 344. 
Leaves sped amnesia: inflorescence not in a large spathe; tran normally — _ (Yucca brevi- 
olia and Y. mohavensis). Fae sh a 
Plants — or shrub-like, or acaulescent from a woody caudex, or oon vin 
Pla oody vines; northern California and southern Oregon. 20. Sanharaduis 1: 458. 
pace not woody vines. 
Perianth —— or erosigaad (of bristles or inconspicuous scales). 
Plants semiaqua’ 
pies nasiodi more or less ie annuals sometimes completely submerged; flowers few, 
perfect, staminate or pistillate. 6. Lilaeaceae 1: 95. 
Caulescent a usually Opes stout; monoecious, many-flowered, the staminate flowers 
borne above the pistillate. 
lowers in dense spikes; pee: of ev 1. Typhaceae 1: 79. 
Flowers i in ince heads; perianth of s 2. Sparganiaceae 1: 80. 
Plants t metimes in stil eae 
Flowers subten ded by 1 or 2 chaffy bracts; basal portion of leaves sheathing the stems 
(grasses and sedges). 
Stems normally hol — betwe eed the nodes; leaf- rg split on 1 side; flowers sub- 
tended by 2 scarious bract . Poaceae (Gramineae) be 303. 
Stems normally sli; leaf sheaths not split; flowers subtended by 1 scarious bract or by 
sever ral pe 11. Cyperaceae 1: 255. 
stout ce subtended by a pale tare - 
T: 345. 
Perianth present, 6-parted or -lobed (3-parted in Triglochin pele, paste or irregular. 
Plants grass-like or sedge-like; perianth inconspicuous, greenish or greenish velow (inner 
F cheno ents white in Scheuchzeria) and herbaceous, or straw-colored or brown and dry and 
rm. 
Fruit of follicles, distinct or separating from the base upward when ripe. 
on Sch ceethnasincene E96, 
ruit a loculicidal 6. Juncacea de 350. 
Plants as grass-like or ee perianth petaloid or me segments fused, conspicuous and 
ually white or brightly colored (greenish in some Convallar — "Geebide ceae). 
Pay of many achenes arranged in whorls or heads; Pant semiaquatic. 
ismaceae 1: 97. 
Fruit capsular or berry- like, never of distinct achenes; sete terrestrial. 
tyles Ba on completely distinct or nearly so; plants from an erect or 
creeping rootstock (from bulbs in 4, yoadenus, seinen Oe 
anthaceae 1: 3 
Style 1, the parts fused; plants oe ee fon cits Peck in Leuco- 
crinum:; woody caudex in Yucca aspp., Nolina 
ae yt eat 5879. 
Fruit a hats (capsular in Scoliopus). 19, faces 1: 448. 
Ovary infer 
Plants caddis acaulescent with a stout woody crown; deserts. 
ra i Amaryllidaceae i: ess 
— es not acaulescent, from rootstocks, corms, or tuber 
nth regular, the 2 series of segments similar or dissimilar. 
22. Iridaceae 1: 461. 
Perianth irregular. 23. Orchidaceae 1: 469. 
Dicotyledoneae 
Choripetalae 
Calyx and corolla both wanting, or if a perianth present this vestigial or obscure (flowers sometimes subtended 
by bracts simulating a calyx). 
Trees or shrubs; flowers unisexual (see also pistillate plants of Atriplex, Grayia, Forestiera, and pistillate 
flowers = some oligo a of Ambrostinae). 
Flowers, at € staminate, in erect or drooping am 
Fruit a dry berry; seeds many or at rages 2 (sometimes 1 = abortion). 
Pees alternate; waae minute, many, comose (bearing a e of hair). 
 Gemeanec 1: 486. 
