40 



LEMNACEJE. 



Lemna 



2691. trisulca, I/. 



2692. Torreyi, Austin. 



2693. perpusilla, Torr. 



2694. paucicostata, Hegel- 



maier. 



2695. minor, L. 



vav. obscura, Austin, 

 var. orbiculata, Aus- 

 tin. 



2696. polyrrliiza, L. 



2697. gibba, L. 

 Wolffla 



2698. Columbiana, Karsten. 



2699. Brasiliensis, Weddell. 



TYPHACE^. 



Typha 



2700. latifolia, L. 



2701. angustifolia, L. 

 Sparganium 



2702. eurycarpura, Engelm. 



2703. simplex, Huds. 



var. Nuttallii, Gray, 

 var. androcladum, Gr. 

 var. fluitans, Gray, 

 var. angustifolium, 

 Gray. 



2704. minimum, Bauhin, Fries. 



NAIADACEJE. 



Naias 



2705. major, All. 



2706. flexilis, Eostk. 



var.fusiformis,Chapm. 



2707. Indica, var. gracillima, 



Braun. 

 Zannichellia 



2708. palustris, L. 

 Zostera 



2709. marina, L. 

 Ruppia 



2710. maritima, L. 

 Potamogeton 



2711. amplifolius. Tuck. 



2712. Claytonii, Tuck. 



2713. compressus, L. 



2714. crispus, L. 

 2714*. fluitans, Rotli. 



2715. gramineus, L. 



var. ? spatholaeformis. 



Robbing, 

 var. ? myriophyllus,E. 



2716. hybridns, Michx. 



2717. lonchites, Tuck. 



2718. lucens, L. 



var. minor, Nolte. 

 var. ? Connecticnten- 

 sis, Robbins. 



2719. natans, L. 



2720. Niagarensis, Tuck. 



2721. Oakesianus, Robbins. 



2722. obtusifolius, Mertens & 



Koch. 



2723. pauciflorus, Pursh. 



2724. pectiuatus, L. 



2725. perfoliatus, L. 



var. lanceolatus, Rob- 

 bins. 



2726. prselongus, Wulfen. 



2727. pulclier. Tuck. 



2728. pusillus, L. 



var. major. Fries, 

 var. vulgaris. Fries. 

 var.tenuissimus,Mert. 



& Kocli. 

 var. ? gemmiparus, 



Rob. 



2729. Eobbinsii, Oakes. 



2730. rufescens, Schrad. 



2731. Spirallus, Tuck. 



2732. Tuckermani, Robbins. 



2733. Vaseyi, Robbins. 



ALISMACE^. 



Triglochin 



2734. palustre, L. 



2735. maritimum, L. 



2736. triandrura, Michx. 

 Scheuehzeria 



2737. palustris, I.. 

 Alisma 



• 2738. Plantago, L., var. Amer-^ 



icanum, Gr. 

 Ech.inod.orus 



2739. parvulus, Engelm. 



2740. rostratus, Engelm. 



2741. radicans, Engelm. 

 Sagittaria 



2742. lancifolia, L. 



2743. variabilis, Engelm. 



2744. calycina, Engelm. 



2745. heterophylla, Pursh. 



2746. graminea, Michx. 



2747. natans, Michx. 



var. lorata, Chapm. 



2748. pusilla, Nutt. 



HYDROCHARIDACE^. 



Iiimnobium 



2749. Spongia, Richard. 



