Adds the trait of leaves with white backs. And the leaf shape ain't bad.

From Bill Meyer's comments A Primer on the Traits of Hosta Species - Hypoleuca adds some surprising traits. Large leaf size is the most interesting one, but others include attractive flowering, acceptance of blue and lutescent gold coloring, and white leaf backs, as well as strong vigor (strange as that seems).
from a Mississippi Valley Hosta Society Newsletter
http://www.mvhosta.org/newsletter/March%20Newsletter%202008.pdf

Here's a pic from a garden tour that catches how white the backs are...

Here are lists of Maekawa and hypoleuca crosses-

Maekawa Hybrids
Big Pizza Pie 'Dorothy Benedict' x 'Maekawa'
Biggie 'Sea Prize' x 'Maekawa'
Blockbuster 'Sea Prize' x 'Maekawa'
Blue Suede Shoes 'Sea Prize' x 'Maekawa'
Blueberry Patch 'Galaxy' x 'Maekawa'
Bows and Arrows (F1 seedling of 'Dorothy Benedict') x 'Maekawa'
Caesar Salad ('Korean Snow' x 'Maekawa') x 'Elvis Lives'
Cajun Sunrise 'Sea Prize' x 'Maekawa'
Clouded Skies 'Fragrant Blue' x ('Korean Snow' x 'Maekawa')
Curlicue 'William Lachman' x 'Maekawa'
Dazzling 'Dorothy Benedict' x 'Maekawa'
Fiesta 'Pin Stripe Sister' x 'Maekawa'
Frisian Falls 'Maekawa' x 'Gilt by Association'
Golden Gloves 'Sea Prize' x 'Maekawa'
Heavenly Constellation 'Breeder's Choice' x 'Maekawa'
Kilauea 'Sea Prize' x 'Maekawa'
Megacup 'Sea Prize' x 'Maekawa'
Mother Lode 'Sea Prize' x 'Maekawa'
My Cup of Tea 'Sea Prize' x 'Maekawa'
Neptune ('Maekawa' x 'Halcyon') x 'Salute'
None Lovelier 'Neat Splash' x 'Maekawa'
Nutty Professor 'Maekawa' sport
Orange Crush 'Sea Prize' x 'Maekawa'
Outrigger 'Sea Prize' x 'Maekawa'
Purple Mountain Majesties 'Galaxy' x 'Maekawa'
Red-hot Mama 'William Lachman' x 'Maekawa'
Rhinestone Cowboy 'Sea Prize' x 'Maekawa'
Ring of Fire 'Sea Prize' x 'Maekawa'
Silver Moon 'Maekawa' x 'Blue Moon'
Song Sung Blues 'Dorothy Benedict' x 'Maekawa'
String of Pearls 'Goddess of Athena' x 'Maekawa'
Super Star 'Dorothy Benedict' x 'Maekawa'
The Mamas and the Papas 'Foxy Doxy' x 'Maekawa'
These Colors Don't Run (x 'Dorothy Benedict') x 'Maekawa'
Tutti-frutti 'Sea Prize' x 'Maekawa'
Unbridled Passion ('Neat Splash' x 'Northern Halo') x 'Maekawa'
You Light Up My Life 'Foxy Doxy' x 'Maekawa'
ZZZZ, A Sleeping Beauty (x 'Dorothy Benedict') x 'Maekawa'
hypoleuca hybrids
A Blue Streak 'First Impressions' x hypoleuca
A Lady in Blue 'William Lachman' x hypoleuca
A Many-splendored Thing 'Dorothy Benedict' x hypoleuca
American Gold Band 'Dorothy Benedict' x hypoleuca
Aqua Duchess hypoleuca x 'Cartwheels'
Arc de Triomphe 'Foxy Doxy' x hypoleuca
Arch Duke hypoleuca x 'Cartwheels'
Azure Snow hypoleuca seedling
Band of Gold 'Dorothy Benedict' x hypoleuca
Bedford Blue hypoleuca x 'Halcyon'
Big Top 'William Lachman' x hypoleuca
Black Queen hypoleuca selection
Blue Ridge Mountains 'Galaxy' x hypoleuca
Blueberry Pancakes 'Sea Prize' x hypoleuca
Bluegrass Country 'Sea Prize' x hypoleuca
Butternut Hill hypoleuca x hypoleuca
Cascading Waters 'Liberty Bell' x hypoleuca
Celestial 'Dorothy Benedict' x hypoleuca
Clambake hypoleuca hybrid
Color a la Mode 'Color Fantasy' x hypoleuca
Doublemint 'Herb Benedict' x hypoleuca
Elkhart Lake hypoleuca x 'June'
Eye of the Hurricane 'Calamity Jane' x hypoleuca
Fickle Blue Genes 'William Lachman' x hypoleuca
Final Answer 'Dorothy Benedict' x hypoleuca
Floppy Disk 'Sea Prize' x hypoleuca
Ganny Sandy 'Beatrice' x hypoleuca
Gazpacho 'Sea Prize' x hypoleuca
Glacier Cascade kikutii x hypoleuca
Gosan Sunproof hypoleuca x (longipes var. latifolia x montana)
H. D. Thoreau 'Sagae' x hypoleuca
Happy Valley 'P14-3' x hypoleuca
High-rise 'Sea Prize' x hypoleuca
Honey Hill Wrinkled Rainslicker 'Fragrant Bouquet' x hypoleuca
Hottie (x 'Galaxy') x hypoleuca
hypoleuca 'Urajiro' --->hypoleuca
King David hypoleuca hybrid
Kiwi Hippo hypoleuca x longipes
Lakeside Breaking News LBSR x hypoleuca
Lakeside Khum Kaw (hypoleuca F1) x 'Lakeside Ripples'
Lakeside Lagoon hypoleuca x "blue seedling"
Lakeside Plum Frosting seedling x (hypoleuca F1)
Lasting Impressions 'First Impressions' x hypoleuca
Lemon Meringue hypoleuca seedling
Lighthouse (F-1 seedling 'Dorothy Benedict') x hypoleuca
Limestone Lover hypoleuca hybrid
Maekawa hypoleuca selection
Maggie May hypoleuca hybrid
Magnificent Obsession 'Galaxy' x hypoleuca
Merry Sunshine 'Fascination' x hypoleuca
Old Black Magic 'Sea Prize' x hypoleuca
Olive Oil 'Yellow Splash' x hypoleuca
Ooh La La 'Sea Prize' x hypoleuca
Roller Coaster 'Dorothy Benedict' x hypoleuca
Rumpled Sheets hypoleuca seedling
Sails at Sunset 'Dorothy Benedict' x hypoleuca
Setsurei hypoleuca x pycnophylla
Show Stopper hypoleuca x plantaginea
Skyward 'Dorothy Benedict' x hypoleuca
Splendor 'Galaxy' x hypoleuca
Stellar by Starlight 'Dorothy Benedict' x hypoleuca
Sun Chaser 'Dorothy Benedict' F-1 x hypoleuca
Talladega hypoleuca x 'June'
Thor hypoleuca seedling
Topsy-turvy 'William Lachman' x hypoleuca
Uncle Albert hypoleuca x kikutii var. caput-avis
Valley's Poker Face 'Red Sox' x hypoleuca
Wild Blue Yonder 'Sea Prize' x hypoleuca
Zeppelin 'Creme de Menthe' x (kikutii f. leuconota x hypoleuca)
Zydeco 'Sea Prize' x hypoleuca

And lots of unnamed crosses.

Paul

Here is a link that might be useful: H. hypoleuca - Hosta Library -- PDF

Well, I don't know if this is a Hypoleuca hybrid or not.

However, one of my favorite moments at the 2011 AHS convention tours was when the host of one of the tour gardens climbed up on a rock wall and announced to the entire gathering at the top of his lungs "Oh, by the way, Mary's White Backside is in the back behind the deck." He was completely serious. Of course, I went over to look for Mary's White Backside, but I only saw some Hosta.

Steve

ROFL

Hahahahaha!!!!!

Great question and great info btw! :)

Ahhhhhh me, wiping tears from the eyes, that tells it like it is. Hope my new hypoleuca ends up with nice body parts too.

I'm glad you asked, I've always wondered the same thing. Very interesting!

Deanna

and I thought S&S had progeny!

As others, I've never been impressed this Hypoleuca here, but now am glad the bees and hummingbird have it to spread around here!

hh

bump....hypoleuca deserves it

OK, Barbara, now that you've bumped it, how's it done for you the past couple of years? How's about some pix?

Pieter

you've seen one Mary's White Backside, you've seen them all ...

dave

Oh, Bragu, we can always depend on you to tell it like it is.

Pieter, I have 2, from different sources. I think #1 is the bearer of two leaves this year....so far. Here is the picture of #2, from Hallson. I think it has a different look from #1. What do you think?

(Of course, I have to make a 2nd post for #1 Hypoleuca). Then I'll make another for Harry Van De Laar, which must have a good deal of hypoleuca in it, with his super opaque white backs.

Next is hypoleuca #1 which came from Contrary Marys.

Then just because I think it is absolutely beautiful and to me shows what a little white back DNA can do for a hosta......even if it turns out not to be a hypoleuca progeny....

I give you the magnificent Harry Van De Laar
(what's with Flickr tonight, it is not retrieving any tag words for me)///Oh yeah, there are two fragrant hosta on either side of good ole Harry. Princetta on the left, Joanne Johnson on the right....both of whom came from Van Wade.
I love Harry. He has red legs and an opaque white back on his leaves....wearing a white dress shirt I suppose since has two belle femme on his arms.

Indeed Barbara, 'Harry van de Laar' is NOT hypoleuca progeny, it's longipes progeny.....

Pieter

PS. Thanks for the update! And the pictures!

Pieter, I'll note that it is longipes progeny in my file. I apologize for dragging a red herring across the path.

you've seen one Mary's White Backside, you've seen them all ...

dave