HOW TO KNOW THE SEAWEEDS 



41a Hamate structures terminal on main branches; lateral branchlets 

 relatively sparse, irregular in length. Fig. 68. .Hypnea musciiormis 



Fig. 68. Hypnea musciiormis (Wulfen) Lamour- 

 oux 



A small upper part of a plant, X 1.5, show- 

 ing the hamate branch tips and the irregular, 

 unequal lateral branchlets. This tropical plant 

 ranges northward to Massachusetts in warm, 

 protected places. Other species of the genus 

 lack hamate tips and key out at step 43b. 



Figure 68 



41b Hamate structures lateral on main branches; lateral branchlets 

 relatively uniform in length. Fig. 69 . Bonnemaisonia 



Fig. 69. Bonnemaisonia hamifera Hariot 



A small part of a plant to show the lateral 

 hamate branch and the relatively uniform slen- 

 der, lateral branchlets, X 3.6. An occasional 

 to common epiphyte in spring in southern New 

 England and also in southern California. An- 

 other species, B. nootkana (Esper) Silva, occurs 

 from central California northward. 



Figure 69 



42a Thallus bearing short, simple or compound spine-like branchlets 

 43 



42b Thallus smooth, without specialized spine-like branchlets 44 



61 



