COHOETS AND OEDBES. (BY THE EDITOE.) 



1017- 



CLASS II. MONOCOTYLEDONS. 



Stem -without distinct layers of wood surronnding a column of pith, or a separable 

 bark. Leaves with usually parallel venation. Floral whorls when present usually in threes 

 or multiples of three. Embryo with one cotyledon. In germination adventitious roots 

 usually at once proceed from the radicular end of the embryo. (Obscure rings of wood 

 and a bark are distingaishable in some arborescent Asparagi. Net- veined leaves occur 

 in DioscorecB, Smilacece, and a few other Orders.) 



Perianth usually 



DIVISION I. 



Ovary inferior (superior in some BromeliacecB and HoEmodoracece) . 

 distinct, 2-seriate and coloured. 



* Albumen ; emhrijo distinct. 



Cohort I. Hydrales. — Flowers usually diclinous, regular. Perianth 6-partite, 3 outer 

 segments herbaceous, 3 inner petaloid or 0. Stamens 3 or more, epigynoas or inserted on 

 the base of the perianth-segments. Ovary 1, 3, or 6-celled. Fruit a berry. Embryo 

 distinct, exalbuminous. Aquatic herbs. 



1. HrDEOCHAEIDE^ 754 



* * Alhwmen floury , embryo distinct. 



Cohort II. Amomales. — Flowers usually 5 ^iid very irregular (regular in Brorae- 

 liaeece). Perianth of 5-6 segments. Stamens 6, 1 or 5 antheriferous, the rest petaloid, all 

 antheriferous in Bromeliacece. Ovary usually 3-celled. Fruit a berry or capsule. 



2. Cannacb^. Flowers y, irregular. 

 Perianth 6-partite, 3 outer segments herba- 

 ceous, regular; inner petaloid, irregular. 

 Stamen 1, lateral ; anther 1-celled . . 757 



3. ZDrGlBERACEiE. Flowers 5 , irregular. 

 Perianth of Cannaceca. Stamen 1, anterior; 

 anther 2-celled 760 



4. Mttsaob^. Flowers irregular, unisexual. 

 Perianth 6-partite. Stamens 6, or 5 and a 

 staminode ; anthers 2-celled . . . 762 



6. Bromeliacea Flowers 5, regular or 

 nearly so. Perianth (sometimes superior) 

 6-partite ; 3 outer segments herbaceous, 3 

 inner petaloid. Stamens 6, all perfect . 766 



* * * Albumin or cellular ; embryo very obscure. Seeds very minute {except Taccacese). 



Cohort III. Orchidales Flowers 5 ^^^ 'very irregular. Perianth of 6 rarely 



3 segments. Stamens 1, 2, or 3, confluent with the style. Fruit capsular. Embryo very 

 minute. 



6. ObchidE/E. Perianth very irregular. 

 Stamens 1 or 2, confluent with the style and 

 stigma. Ovary 1-celled, rarely 3-celled . 769 



7. AposiAsiACEiE. Perianth sub-regular. 

 Stamens 2 or 3, adnate to the base of the 

 style. Ovary 3-celled . . . ,777 



Cohort IV. Taccades. — Flowers 5 > regular. Perianth 6-lobed. 

 inserted on the perianth-tube ; anthers peculiar. Ovary 1- or 3-celled. 

 berried. Seeds minute, exalbuminous, or larger and albuminous. 



8. Bttemanniace*. Leaves 0, or narrow 

 with parallel venation, or broader and net- 

 veined. Seeds minute ; embryo obscure . 777 



Stamens 3 or 6, 

 Fruit capsular or 



9. Taccacejb. Leaves broad, with a mid- 

 rib and pai'allel diverging veins. Seed albu- 

 minous ; embryo minute . . . . 



780 



