O LAURINE.3E. 



Order III. L A U R I N E /E . 



Bepresented by a single and monotypical genus. 



1. UMBELLULAKIA, Null. (California Laurel). An evergreen 

 tree, with alternate coriaceous entire aromatic foliage, and perfect 

 flowers in peduncled terminal and axillary small capitate umbels; these 

 in bud covered by an involucre of about 4 broad caducous bracts. 

 Perianth with no tube; segments 6, the 3 outer enfolding the others, 

 all deciduous. Stamens 9; the outer series (6) spreading, the inner (3) 

 erect and near the pistil; a circle of 6 stout stipitate glands intervening 

 between the 2 series; anthers 4-celled, of valvate dehiscence, those the 

 outer series introrse, of the inner extrorse. Fruit drupaceous. 



1. U. Californica, (Arnott), Nutt. Tree 10—75 ft. high, the growing 

 twigs and inflorescence minutely puberulent: leaves oblong-lanceolate, 

 2 — 4 in. long, short-petioled, bright green: peduncles % — 1 in. long; 

 pedicels of the 5 — 10 greenish yellow flowers 1 — 5 lines: drupe dark 

 purple, ovoid or subglobose, 1 in. long, the pulp and putamen thin. 

 Common along streams and on northward slopes of hills. Jan. — May. 



Order IV. NYMPH>EE/E, 



Water-Lily Family; represented by one species. 



1. XYMPH iEA, Theophr. (Yellow Pond-Lily). Aquatic : rootstock 

 stout, creeping at the bottom of ponds and. streams. Leaves large, 

 leathery, cordate, entire, either floating or raised above the water. 

 Sepals 6 — 12, imbricated, rounded and concave, yellow or reddish. Petals 

 and stamens go, short, hypogynous; filaments short, anthers truncate, 

 extrorse. Ovary, oblong or ovate 12— 20-celled; the sessile broad flat 

 stigma with as many radiating striae. Seeds without aril. 



1. If . polysepala(Engelm.), Greene. Sepals 9—12, all but the greenish 

 and small outer ones of a rich brownish red: rays of stigma 15 — 21, the 

 margin somewhat crenate. — Not rare in Marin Co. ; also in some lakes or 

 ponds in the outskirts of San Francisco. 



Order V. PAPAVERACE>€. 



Herbs (Dendromecon shrubby) with a colored or milky narcotic juice, 

 commonly glaucous foliage, and mostly solitary showy 4-merous or 6- 

 merous flowers. Sepals 1, 2 or 3, caducous. Petals 4 — 6, crumpled in the 

 bud. Stamens 6— co, usually hypogynous; anthers innate. Pistil com- 

 pound and the ovary becoming a capsule, or the carpels nearly distinct, 

 maturing as almost follicular pods. Seeds oo ; albumen fleshy or oily; 

 embryo minute, straight. 



