POLLEN. 33 



Hydropkyllacea contd . 



Phacelia Wrangelii. H. 



Nemophila atomaria, 5. 



* insignis, 5. H. xv. 60. 



* parviflora, 3. 



phacelioides. H. 



pedunculata F. 



*Romanzoffia Sitkinensis, 4. 



Wigandia urens. F. 



POLEMONIACE^E. () According to Mohl, spherical with many pores ; 

 punctate. (&) Cellular, (c) A flattened ellipse with pore on the 

 equator. I have not seen this form. 

 *Poleinonium caeruleum, 8. H. 



* reptans, 9. P. viii. 2. 



Ipomopsis elegans. H. xvi. 83. 

 *Phlox Drummondi, 10. H. xvi. 82. 



decussate. WS. 58. 



* divaricata, 5. 10. 



undulata. H. 



reptans. P. viii. 3. H. 



acuminata. H. 



paniculata. H. 



*Gilia tricolor, 4. H. 



achilleaefolia. H. 



- capitata. II. 

 *Leptosyphon androsaceus, 11. H. 



- densiflorus. H. 

 Cantua foetidissima. P. viii. 4. 



pyrifolia. F. 



Collomia grandiflora. H. xvii. 80. 



rosea. H. 



coccinea. H. 



lateralis. H. 



*Cobea scandens, 25. H. xv. 79. B. cxix. 54. 



stipularis. H. 



GENTIANEACE^:. Simple ellipse with three slits. 



Chironia pubescens, 8. 

 * splendens, 10. 12. 



Gentiana cruciata. H. 

 * acaulis, 12. H. 



Amarella. M. 



- asclepiadea. M. H. 



concinnis. Hf. Ant. xxxv. 



Ilou.stonia coccinea. M. ii. 16. 



*Menyanthes trifoliata, 12. M. 

 Chlora perfoliata. P. xi. 1. 

 Swevtia perennis. P. xi. 2. 

 Krythreaea centaurea. M. 

 Chironia baccifera. M. 



frutescens. M. 



LOGANIACE^:. Mohl describes the pollen as ovoid with 3 pleats, but 



in the only specimen I have examined it was 3-cornered. 

 Logania longifolia, 6. 



floribunda. F. M. 



Gsertnera racemosa. M. 



paniculata. M. 



Spigelia marilandica. M. 



Mohl gives 7 forms : () ovoid with 3 pleats ; 

 D 



