20 6 LOOSESTRIFE ORDER 



. Leaves entire or wavy, smooth T. subacaiilis 



2. Leaves pinnatifid, finely hairy T. breviflora 



ZAUSCHNERIA Presl 1831 

 (Named for Zauschner, a German botanist) 



Sepals 4, united into a tube extending beyond the ovary, bearing 8 

 small scales inside at the upper end, petals 4, red, stamens 8, 4 longer, 

 ovary 4-celled, stigma 4-lobed, capsule linear, 4-angled; flowers large, in 

 racemes; leaves mostly opposite, simple, toothed; perennial, or woody at 

 base. 



Stems .5-1 ft. high ; leaves ovate, 1 in. long ; calyx- 

 tube 12-15 mm. long Z. calif ornica 



GUNNERACEAE WATER MILFOIL FAMILY 



Sepals 2-4, united into a calyx grown to the ovary, petals 2-4 or none, 

 stamens 1-8, ovary 1 -4-celled, styles 1-4, fruit a nutlet or drupe of 2-4 

 1 -seeded carpels ; flowers perfect, monoecious or dioecious, solitary or 

 clustered; perennial or annual aquatic herbs with alternate or whorled 

 leaves, the submerged ones usually dissected. 



1. Leaves entire, 6-12 in a circle HIPPURIS 



2. Leaves finely cut, 3-5 in a circle MYRIOPHYLLUM 



HIPPURIS Linne 1753 BOTTLE BRUSH 

 (Gr. hipp.os, horse, oura, tail) 



Sepals united into an entire calyx, petals 0, stamen 1 on the margin of 

 the calyx, ovary 1-celled, style 1, fruit a 1 -celled, 1-seeded drupe; flowers 

 axillary, perfect or imperfect ; leaves simple, entire, whorled ; aquatic peren- 

 nial. 



Stems .5-2 ft. high; leaves linear or lanceolate, 1-3 

 cm. long H.vulgaris 



MYRIOPHYLLUM Linne 1753 WATER MILFOIL 

 (Gr. myrios, countless, pfayllon, leaf) 



Sepals usually 2-4, united into a short tube, petals 2-4, greenish, stamens 

 4-8, ovary 2-4-celled with 1 ovule in each cell, styles 4, fruit maturing into 

 4 1-seeded closed carpels ; flowers monoecious or perfect, axillary or be- 

 coming spiked ; leaves whorled or alternate, the aerial ones entire to cleft, 

 submerged ones finely dissected; aquatic perennial. 



1. Flowers in a spike, the bracts small, ovate M.spicdtum 



2. Flowers in the axils of pinnatifid leaves M. verticillatum 



