▁No . ▁ 3 9 , ▁in ▁ 2 0 0 3 . ▁ ▁References ▁ ▁Category : 1 9 7 2 ▁birth s ▁Category : American ▁male ▁tennis ▁players ▁Category : S ports people ▁from ▁Hun ting ton ▁Beach , ▁California ▁Category : S ports people ▁from ▁New port ▁Beach , ▁California ▁Category : T ennis ▁people ▁from ▁California ▁Category : L iving ▁people <0x0A> </s> ▁Josef ▁Jakob ▁Hal da ▁( born ▁ 7 ▁December ▁ 1 9 4 3 ) ▁is ▁a ▁Czech ▁botan ist ▁who ▁worked ▁at ▁the ▁Institute ▁of ▁Bot any ▁of ▁the ▁Czech oslov ak ▁Social ist ▁Republic . ▁He ▁became ▁a ▁member ▁of ▁the ▁Czech ▁Botan ical ▁Society ▁in ▁ 1 9 8 7 . ▁He ▁studied ▁the ▁fl ora ▁of ▁the ▁Czech ▁Republic ▁and ▁made ▁a ▁number ▁of ▁exped itions ▁to ▁Mexico . ▁As ▁a ▁scient ist , ▁he ▁studied ▁the ▁tax onomy ▁of ▁gener a ▁Pa e onia , ▁D aph ne ▁and ▁Haw orth ia . ▁He ▁also ▁published ▁popular ▁books ▁such ▁as ▁The ▁genus ▁Prim ula ▁in ▁cultiv ation ▁and ▁the ▁wild , ▁which ▁was ▁illustrated ▁by ▁his ▁wife ▁J arm ila ▁H ald ová . ▁He ▁proposed ▁new ▁names ▁and ▁combinations ▁such ▁as ▁Beg onia ▁j arm il ae ▁and ▁Con oph yt um ▁j arm il ae ▁( after ▁his ▁wife ), ▁Gent iana ▁are th us ae ▁sub sp . ▁del ic at ula ▁( C . Mar qu and ) ▁Hal da ▁and ▁× J anka end ron ▁Hal